Yea, I've been lurking nicoclub.com gathering intel on swaps and such. I know i want an s13 coupe, will probably do silvia front end, probably sr20 cause i'm looking for modest power, ~350whp, on stock internals. An sr20 with proper bolt-ons and a proper tune can do that easily with room for playing. You should check out nicoclub.com, best nissan forum i've been to yet, and AZhitman is a great guy, lives here in phoenix and is owner of the board. There is a ton of great projects and lots of inspiration and information.
This guy has my favorite build so far:
http://forums.nicoclub.com/zerothread/211677
I'll probably closely mimic what he is doing. I don't particularly like that turbo though, I'll probably go with one of the GT2871R turbos, build the head, 264 cams from tomei, bigger injectors, etc. Anywho, doing it myself, I figure it'll probably be a 1-2 year job but it'll be a clean build and more intrinsically satisfying than paying some shop gobs of money to do it. I really want a black top sr20 but i'll settle for a red top if the price is right. Most of the stuff will probably be junk yard parts, as there are a few threads detailing how to install big brakes from 300zxs and infiniti j30s, as well as axles, driveshafts, lug conversions, and all that good stuff.