perhaps post a pic of the manifold if possible?
its the ports are square, its a 292/250.
if they're round, 235/261.
or, atleast thats what i think i know...heh.
1969 K20 , with a '67 front clip. fleetside. 292, 3x1 offy, headers. sm465 4spd. getting put back together, almost ready for paint.
doing it all myself.
19 and lovin' it.
"proper" is so over-rated.
.later days.
.sam.
