nah you can tune it in yourself, although giles builds a mean ass pump, you can still do pretty well with out a built pump, and yeah i definetly agree, as soon as you start making any kind of power with these engines, a clutch is going to be needed, unless you can take it easy. my clutch doesn't seem to like once i get up around 20-30 psi, that's when it starts slip. but i also drive like an ass, and although i'm not constantly knocking gears, i am um spirited with its use. and i definetly agree the garrett turbos are the best out of the k24 and t3, my dads 85 td has the garrett and my car has the kkk and his turbo definetly seems much better, although mine has a very knackered compressor wheel, i still feel they are very comparable, as his car is very strong pulling under boost.