[zdude]

i say ka-manual, youve got more torque off the line, and a better 60', but less high end than the sr, but have a slower 60'. sr if you want to drift because of the higher power curve, youll have the rpms pretty high throughout the drift. ka-t sounds like itll be cheaper than the sr also, 250 + lets say an extra 100 for the other parts, then labor if you arent doing it yourself, around $1500 vs the 2-3k for the sr +purchasing the actual engine