you might be suprised in what some modified civics can do, even keep up with a stock 4g63T or better. also in another forum you had posted looking for parts to do a manually tranny swap. i'm not trying to discourage you but, all the work and headaches to swap a manual in and trying and make a non-4g63 fast why don't you start with a 5spd 4g63t???
i'm guessing your planing on doing most of the work yourself cause it will cost a small fortune to get things swaped. normal mechanics are not into that kind of stuff so it would most likly have to be a performance shop. $$$
Hey if you go ahead with it though all the power to ya!!
Good luck.
and if you've already thought of all this then i apologize for the post. just trying to help.