been using it since 2004, abused and so far still survived, last time i entered the AE80 group drag event early July at Dato' Sagor Circuit..though no podium but had a lot of fun, won once an lost once..7agze btw...currently running 0.6 bar, but it sure felt and performs way better than my stock 4agze with 0.8 bar, sc12 can't support enough air and best use with sc14 (future plan, currently with SC12)...one of the main thing is the cam timing must be correct..i re set the cam setting back to stock 4agz cam spec (approx. max lift around 110,110 in/ex atdc/btdc)...adjustable cam pulley is a must..i found that it was a few degree off from the stock cam timing (intake/exhaust).. if i didn't adjust the cam accordingly. the butt dyno sure felt waay better than before degreeing the cams...due to RTS ratio quite low, hi revving not recommended..i just love the torque..:) i have a fren using and his 20V 7AG also have sweet torque but a bit reduced effective top end power due to higher load created by the long stroke config..but you can compensate it with your final drive, or your tire, the performance not bad..there are pros and cons...just weigh your needs, what do you want from your engine? "look-mom-i-overtake-no-need-to-drop-gear-wooh" torque? or intoxicating high revving machine?..i chose my path and satisfied with what i got from this 'cheap' stroker kit hehe..my porsche 924 timing belt just cost me around RM120 :) ..my noob experience..just wanna share..there are way better solution than 7ag..2zzge, 3sge, 3sgte..hassle free stock unit already powerful than stock 7ag..just prepare the money for the conversion and the halfcuts, puspakom, JPJ technical dept.. :P