can i assume that they are 64 pitch? lets say for 88 spur, is 40 pinion possible. i'll prolly run min at 5.4fdr, but might push harder.
They are all 64 pitch. Im not quite certain what you mean by "push harder". Are you referring to handling? if so, there are ways to get steering out of your car...i run my S in RCGT Pro and 17.5 TC and doesn't lac in steering.