QUOTE(sixnotfour @ Jun 22 2012, 07:46 PM)
The C dimension on that drwg is not for a 914.
QUOTE
For reference my 914-4 flywheel uncut measured "A"22.5 and "C" 9.5.
you can go 1.5mm less = grind the bolts flat, Dont forget to shim the pivot ball stud the same.
The "C" dimension is for a six, not a 4. The clutch disc center cannot touch the flywheel bolts. I think as long as there is a ridge left you'll be OK.