if you want to fix it get some fibreglass filler. should be fine after that.
you can also get a fibreglass repair kit off supercheap and make the coat of fibreglass thicker (from the inside).
it shouldnt be too hard of a job.
you'll need a sandwich plate for the oil gauge (senders go onto the sandwich plate.. the sandwich plate sits between your block and your oil filter.
the water temp sensor goes onto an adapter that goes inline with one of your radiator hoses.
both can be bought from justjap
i dont give a fcuk what anyone says, this is just a vote on who likes gtr's and who likes gt(s)t's.
if you want to know which car to buy or what to do, drive both and see which one makes your pants tight.
when i first bought my car i was a complete n00b.. so i sent my car to advan. he surely did fix my misfiring problem.. and i surely did pay through the ass.
that goes with most reputable companies though. theyve built the name so you pay for it. advan get the thumbs up though.