niz, speaking to my mate about hi-stalls for your auto....he just put a hi-stall in his semi-auto custom build tranny, datto. tim lots of people know him....he does all the work on my car at sik em wrex.... anyway his hi stall is set at 3800rpm and to get it higher you have to buy a new one.... the bad bit about this, is that its not high enough he prolly needs about 6000rpm with the huge slicks... anyway just a warning for if you do get one make sure its a high enough hi-stall for if you get mods and may need more spool etc etc...