Thanks for all the input guys.

I should have mentioned I have, of course, been reading up at zilvia, 240sx.org and freshalloy...just thought I'd see what some "real" people had to say
stirpicult - pretty much we just want to get a turbo in there, for the obvious power gain, and greater power increases we'd obtain from other mods (intake, exhaust, etc). JDM would be nice, but either way is fine.
And yeah Dan, meant 250-275 crank, not wheel
NismoRacer - low boost is what we're looking for, like 7-10 and probably nothing higher than 10-12psi. This will be his daily driver for a few years, so we don't want to be blowing up too many engines
Our KA has about 130k on it but like you guys said, another KA can be had at relatively cheap prices.
Again, thanks for all the comments...if anyone has any other input, would love to hear it