I know your pain. Everything (except the yolk) in this picture was caused by a single carb nut falling in the intake and me not knowing it:
Anyway, I know that doesn't make you feel any better. I'm sorry. Bro.
BTW, ALL 5.0's that were in cars after 1986 are roller blocks, and all that were in trucks after 1988 are roller blocks. They may not have a roller cam in them, but they are all the same block.
Take care,
~Chris