The flywheel bolts are special high strength bolts that you should only get from FORD or ARP. ARP also sells bolt kits for these engines that include intake, distributor, waterpump, timing cover, valve covers,
oil pan...etc. Also there are different waterpumps that require different length bolts. I used an Edelbrock water pump and some of the bolts were too short. If this had come out 3 weeks ago I could have helped you on the
oil pump - I just changed mine.
Get a Summit/Jegs catalog and look at the ARP bolt kits.