It is just that I have heard conflicting stories, alot of them here about this swap. My 93 has over 200,000 miles on it and I've only put a grand or so in it after purchase, bough twith only 43000 on the odometer. I just don't want to spend coin building a motor that my or my not hold up to the HP of adding turbo, injectors, ect.....
There are alot and I mean alot of threads out there disscusing this topic. That said, I will at some point rebuild my motor and turbo it. I undestand that a stock KA can handle a turbo with limited boost. But I want lots o boost, so I'll wait and do it right. The way I understand it KA=Torque, SR=High Revs. I know the SR is lighter and prettier, but I love the KA, it begs to be turboed. PEACE
There are a few people who have swapped in the SR20DET which is not a direct swap but also requires a trans from an early G20 or a Sentra SE-R. The stock KA can handle about 8-9 lbs of boost which is about 220 HP. Your car at 220K is going to need at least a good rebuild whether or not you bolt on a turbo now or after the rebuild in order to be reliable.
I have about $12K in my KA turbo engine but I am trying to get a reliable 500 WHP. You can view it here; http://www.altimas.net/registry/vehicles.php?vehicleid=1094