Welcome, from west Michigan. I'd don't switch pitch, so no info from me. But I'll do my best to help in any other matters. BTW, info on your Buick? Pics?
I was gifted the engine and trans. I am a Buick fan and look forward to this build. I thought BBC parts were high, dang!
Welcome from North Carolina! Had a few 430's and still have a spare, a word of caution make sure those cursed nylon coated timing gears are not still in it. When those suckers grenade you are in for an expensive rebuild. What kinda car you planning on putting it in?