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.