MK Indy kit car Diff limiting speed
Guys,
got a Kit car based on a sierra and the Diff which i've been told it is limiting my top speed to 110mph, which it is fine around Cadwell but it started to run out of steam. Whats the best diff ratio or diff to use to increase the speed up to around 150. The engine is ZX12r motorbike engine. Its going to the ring next year so want it to be good at the high speed stuff as it is at the low speed stuff.
Cheers
Brendan