Small block tube header ID Doug’s or TTI?
My Doug’s for early A and 273 does have a bolt flange on 5 and a slip on #7 I believe.
My Doug’s for my 340 Demon does not.
My Doug’s for early A and 273 does have a bolt flange on 5 and a slip on #7 I believe.
My Doug’s for my 340 Demon does not.