Good morning , I'm in the process of getting engine parts cleaned up and magnafluxed for a 54 f100 project. I recently traded for a 1957 312 with G heads B intake and Ramhorns. The 312 is stuck and looks as if it has set for years. Just removed the Ramhorns, intake and one head . My questions is, is it nesscesary to magnaflux the intake, are they prone to cracking? All the bolts came out easy enough and threads look good, just has at least three layers of old paint. Thanks.

John