if you have a 153 tooth flywheel you are limited to 10.5" clutch,but those will handle lots of torque
if you have 168 t flywheel you can run 11" ( and more but hi-perf designs are limited).....153/168 use different bellhsg,starter,fork
most mfrs can furnish "pressure plate" with heavier springs for more capacity....start left leg body-building program now
when you "hammer it" -- if nothing slips,something WILL break...a "little" clutch slippage is a good thing (top drag cars run 'slider' clutches which they 'tune' by varying pressure plate spring tension to get 'controlled' slip--and they 'rebuild' after every pass)...too much slippage of 'street' unit generates fantastic heat and ultimate failure--CATASTROFIC failure....car designers usually let tire slip act as safety valve--first thing we do in field is put on 'stickier tires...think about it,play smart