yeah dude, its just a slapper, i used to work in porsche supercup, a factory mod was the change from sintered brass to steel synchro rings, they are a bit heavier on the wear of the gear cone however give a far crisper and quicker gear change due to the higher co efficient of friction of the steel pn stell set up. consider synchros are $30 ea, times 5 = $150, os gear set $2k plus ?
im not that keen on spending that sort of money on a gearbox, as i said its just a slapper. I dont need a twin plate, its only 230rwkw, if i dump it it would smash the box, i've generally found that a good single plate is well upto taking this power output.
thanks for the comments though, all info helps, especially passing it on to other,
cheers