ive torqued my flywheel bolts to spec once. the one time i did. pow. shnapped em.
every other time ive used 2nd hand ones and just done them up TIGHT, with loctite (a debate in itself) and its been all swoit. for a while there we didnt use loctite, and ive actually heard one car i worked on the flywheel came loose
you will be able to use a 4ac bolt instead of ge. the head is bigger, but it will fit between the 4age bolts, so you can use upto 4 4ac bolts with 4 4age bolts.