Originally Posted by Daveysaff

You can use the cps hole in the block, but you'll have to machine most of the webs out of the flywheel so that you've only got 3 webs left, then let some metal into the gap where the 36th webs should have been so you've only now got 4 pick ups for the cps.
If any of that made sense!!
There's a step by step guide to that on the zetec turbo site anyhoo.