Performance tranny/clutch package

Just wondering what you guys with 4-speeds have done to convert to 5 and 6 speed, and if any of you have over 500 (or 600 Im most interested in) horses, what tranny and performance clutch youd reccomend.
Also, Im definitely a stick shift newbie, haha is there any way to retain drivability without sacrificing performance in your clutch and tranny at that sort of high output? Thanks


