I fail to see what the todo is all about. Blind freddy can tell you that an extra 500 cc of capacity is going be a torquier engine than its smaller displacement counterpart all things being equal.
The 2.5/2.6 is also going to be the same in relation to the rb or sr 20. So what?
They can all be made to go like the clappers and embarrass the hell out of much more fancied machinery in all venues, street.strip and track.
Does that mean that everybody should ditch their sr's, 25,s 26's etc and run vl engines, I think not.
I made my choice and wouldnt swap for quids. A hot 25 that bakes them in all 4 gears and makes full boost by late 3's is plenty of fun for me. It purrs around the streets and becomes jeckyl and hyde when i nail it. What the hell more do you want.