Aluminum heads

I would need to know more.... but fwiw
1008 felpro-.039 thick
8553 felpro-.046-.048 thick
519sd felpro-.054 thick

"Regular blue felpro" the 8553?
Try the 519sd and keep the good heads you have. If you were close...I could dial all the chambers in=enlarge them. I think you can fix this without changing something as important as the heads
I like this idea, I wasn’t sure if this was something I could do but I did think about it. Thanks, I’ve been thinking about going aluminum for along time. But now that I have to remove the heads anyway I was going to do it, I just wasn’t sure which head to go with. Especially with the lack of availability. The heads I have seem fine if I can enlarge them the cc to help. Thanks again