factory magnum head replacement options

Interesting question. Lol. I like a good challenge and actually it’s an idiotic thing to even consider with 8 set of LS heads sitting here and probably 4-5 sets of my own Speedmaster and Edelbrock heads to finish and sell. I’m not buying any speedmaster heads or taking on any this winter so I can catch up. If I take on 4-5 intakes that will keep some money rolling in and still let me catch up. So like I said it’s not a very smart thing to consider.
I’m glad you are considering it. I don’t think I’ve seen a set of stock magnum cast heads ported someone with your background or experience. I’d like to.