If it is "from" a 1967 Firebird, it's a 230. If it's "in" a '67 Firebird, it could be a 230 or a 250. There is no such thing as a poor man's rebuild on the OHC. Plan to rebuild the entire engine, not just the top end or bottom end only.
The fan is easy to find. The PS pump is like every other Saginaw pump. The bracketry is OHC-specific.
The engine mounts are VERY specific to the OHC Firebird and will set you back about $150 for the pair.
Camaro mounts will NOT work.
The OHC ST300 (not Powerglide) in the '67 is air cooled, and has two large holes in the case, and the torque converter has a heat sink. You will have to locate a '68 or '69 radiator with cooling line fittings if you want to use the 326 ST300. It is a direct bolt-up otherwise.
The cross member for the ST300 is the same as the TH350. Not sure if the Camaro cross member is the same.
