I have standard clutch at the moment, dont have any problems with it at the drags, no problems running 12.89 anyway once all the mods are done and the car is 320rwkw I'll definitely be doing the clutch then! a heavier clutch is always going to be different to the standard one, it really depends on what you call clunky mate. a few people have bagged the FG manual saying the clutch is too heavy the box is crap me personally the clutch feels fine and box works perfectly. the box makes some moans and groans and sometimes doesnt feel as smooth as other cars, but remember the box is attached to a 4ltr in line 6, not a 2 ltr ricer