1 5/8 headers

B3422w5 said
yes, they only make them this way. Looking at them, they appear generous, size wise.
my Bloomer heads were fine even with the smaller ( it would appear to me) Doug’s headers openings
I can’t imagine these wouldn’t work.
I know the Bloomers have a bigger intake port than Trickflows, but I didn’t/ haven’t measured my exhaust ports

Same flanges as the Dougs and others. I’m just curious since TF (for example) made the exhaust ports a particular size and shape whether having the flanges of any headers shaped similar, without the shape of the typical LA exhaust ports. A topic for another thread, don’t want to sidetrack here.