Speedmaster, Edelbrock, ProMax head question for you guys

pittsburghracer said
I wanted to check out your numbers and was shocked to see you don’t have them listed on your website. Hmmmm shocker.


IMMENGINES.COM
Click to expand...
I saw this in another member’s for sale add, FWIW:
1694823726434.png

[FOR SALE] - Ported Speedmaster heads