Scream'n 318 ?

rumblefish360 said
@RussellSullivan Do NOT polish the heads intake runners. Chamber? Yes! Good.
If you can port yourself (I’ll assume so) or have it done for you, great. That’ll free up some power!

Yes. I wish I was this handy but I traded this job for some tools. (Electric die grinders) LOL Oops, getting side tracked.