Ok mine is 1996 small turbo,an from what i can read there is suppose to be a small mod to the revcount due to org coilpack? Mine is coverted into a bt whit loom from ryan etc.The previous owner who fitted the bt stuff didnt do anything to the revcounter and it worked whit no problem??i have fitted a msd 6a box to my msd coil now and should as i have been told but a cable over a resistor on the back of the revcounter to get it to work whit the msd 6a.But how can i know what revcounter i have? I havent tried if it works whit the msd 6 yet but it shouldnt do it.Any ideas