GTSBoy

No. Not feasible. Go below 5mm at your peril. More is better.

Just measure the diameter of the barrel and subtract 355mm from it to see what radial space is left. (and of course, divide that by 2 for the number you're really looking for). Then you can ponder which calipers will fit in that gap, and if perchance there was room for a 5 or 10mm larger disc as well. Oh, plus the running clearance you're happy to live with.

Yeah, nah, I don't believe it. Try to use a thin screwdriver blade to lever the blue plastic + glass out of the original one. I bet you those terminals come right through the plastic. But notwithstanding my scepticism, you're looking for something like these, yes? https://www.ebay.com.au/itm/Air-Con-Climate-Control-LCD-LED-SMD-Light-Upgrade-For-Nissan-Skyline-Stagea/161839873383?hash=item25ae687d67:m:mNBLDEFYdzn8tzeIYklj5RA

Um, the plastic bit is not replaced when you change bulbs. You just push the globes/leds into them.

Up there with the pie floater and the yiros/souvlaki.

Money no object + brilliance.

Meaning you have checked that there is power on the pin(s) that are supposed to have power, earth on the pin(s) that are supposed to have earth, etc? Have you tried to power it up on the bench?

It depends on the calipers you use too. Different calipers have different radial "height" over the outer edge of the disc.

Low compression won't make it run rough. That will be something else. Dirty injectors, faulty coils, AFM, CAS, IACV, etc etc. The usual suspects on 30 year old Skylines. If you have the money, rebuild it. You'll need ~$5k just to get a rebuild that you won't be ashamed of done though. Nothing special, mind.

Have a look at photos of the two gearboxes. You will see why one cable is shorter than the other. The speedo cable connection point is in a different place. Also, I suspect that the connection at the gearbox is not the same either.

But you weren't wanting to install it on the car, were you? It's just to put on the shelf so you know you "have" it while you use a decent ECU on the engine itself, right?

The whole argument on Rotella is probably a waste of time anyway, if we work on the likely assumption that the OP is in Australia. It's not sold here, AFAIK.

Why not put the effort in to do it properly?

Dim sim is definitely the cheaper end of the scale, but only because it's actually almost an Australian thing, not Chinese. In China the whole category of dumplings is known as dim sum. One particular type of dumpling is the Aussie dim sim. Dim sum would be part of the food offering at a typical yum cha.

All the more reason not to use a "fixed" ECU.

What do you mean "Trace my VIN"? Your car's ID plates will be in the bottom of a scrap metal bin and the rest will have been used to repair another car.

How stock is it?

Hmm. I had a look through the entire manual and could not see a representation of that plug either. I'd suggest you're down to following the wires.

The wiring diagram is a thing.

The crank would have to push the piston all the way through the combustion chamber and into the valve seat area to hit a valve that is closed and cannot be open because there is nothing (no camshaft) to push it open. Close eyes. Picture inside of engine.

No cams installed = ........ [you complete the sentence].

Note the plural. Ignition coils. Air Flow Meters. Crank Angle Sensors. And the worst of all......ownership by morons who modify shit until it burns up. All of these are pernicious.

Do a leakdown test, to see what the rings might be like. But keep in mind a few things. Compression rings are not oil control rings. Oil control rings are not compression rings. Leaking valves have nothing to do with leaking valve stem seals.

No. I was being quite serious. Nissans of the era are not terrible, but they have a large array of electrical problems. Toyotas, even Supras, are whitegoods with supreme reliability.

No.