most everything will interchange on these engines.
different between a 292 and 250 in the head is nothing. the only change was the 194 had a smaller cumbustion chamber, so it would up compression if used on a bigger doisplacement engine. other wise...the manifolds are exactley the same.
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.