I'm not a purist. I just get irritated when people put a fucking chevy 350 in every god damned project with wheels.
You know, when you go to a car show, and there's this fucking gorgeous 50's ford with a chevy 350 under the hood... I tell those motherfuckers how i feel.
Couldn't be bothered to put a 351C in it, nope, saved 500$ and put an ls1 in it.
Look, put what you want in your car. 5 minutes browsing ratsun and you should know what to expect when asking if you should put a chevy motor in your 510.
If you want to do a power swap, do something original. I can't tell you what, because then it wouldn't be original.