yeah, i've been thinking about doing something about the power.
i've got a lot of close friends that have had experience turbo'ing KA's. i actually helped one of my friend build up his ka24DE-T, but he went back to canada to finish school.
the U12 has PLENTY of room in the engine bay, with that said, KA24E-T is a big possibility
i can get a manifold, but everything else has to be custom, oil return for the oil pan, piping, engine management.
my biggest worries are money, time, and if this doesn't come out right...then i'd be stuck. it's my only car and my daily driver. i've also contemplated going to a manual gearbox, but i did a cost analysis and well..it wasn't going to be very friendly to my wallet. i've got the manual s14 seatbelts from my old car, but converting it would mess up the interior aesthetics.
u12's are pretty rare here...a large percentage of them are rusty beaters. on the flip side, every U12 owner that i've met LOVES their car. I have yet to have a passenger that will tell me that my car sucks...
the damn things handles great...although not as good as an S-chassis, it's more practical and comfy.
[edit] oh yea..i also looked at the downpipe from the exhaust manifold, IT'S SO SMALL! like something from a scooter. i might get a pipe welded in place of where that bottle neck is.