Hey there
I have a SR20 N/a in my 1200 coupe allready. The best ive done at the drages is a 14.7 and the motor is dead standed. It makes it a fun little car. Doing a n/a converision is a heap cheaper way, as you can bye the motor and box a lot cheaper, and you dont need to do a intercooler and plumbing. I used a the standed diff and it hasent broken yet.
If u need any info pm me
Trent

http://www.turbophile.com/feature_cars/trents_sr20_1200_coupe.html
that is the website my pics are on