Thanks mate, what I was actually after is there any way of identifying from the crank only whether it needs a 400 harmonic and flexplate or a 350 harmonic and flexplate. Its a scat crank and unfortunatley scat makes the 383 cranks for both the 350 and 400 harmonics. I purchased the kit online of ebay, from someone who had given up on the rebuild and he didint even know there was a difference