[slyalfa]

I think both IAP and centerline have good guides.
the centerline use ther own seals. the IAP will use std. but get the green Viton (DO NOT USE the BLACK IN the HEAD KIT) they are junk and will start to leak right away.
BTW valves at IAP are very cheap intake $14.25 ex $18.95
cheaper then having the local guy redo the old here.

 

[slyalfa]

"Slyalfa, green Viton? Where do I get these?"
that is what IAP sell #38002

there web image is black. but in there book it is green.
and I pulled some green off a old head and there were still soft and sealing perfect. very nice