It would seem to me to be possible, but there's alot of little things to consider, such as actual wheelbase, driveshaft lentgh, a tunnel for the drive shaft, custom drive axles, modified tranmission mounts, a place to put the third member, and getting the suspension straight would be an absolute nitemare.
Anything is possible. I've seen a front motored, rear wheel drive 1969 VW beetle with an oldsmobile 455 CI big block in it's front. Anything is possible, it's just a matter of time, ingenuity, and a fat bank roll.
It would help if the "Americanized" B15 has a japanese cousin with AWD on EXACTLY the same chassis. I don't know about that.
I know converting the MK 4 Golf Front Wheel to Four Motion is possible, but that's because they are almost exactly the same chassis.
Anyone know if the facts and figures match up? I gotta admit, an AWD Spec V is one hell of a turn on. that would REALLY make it damn near a baby Skyline, all you need then is a big F'in turbo.