Maybe a dumb question but bear with me.. Just bought a 1979 chevy g10. Its got a 250ci inline 6 that I really wanna do a four barrel conversion on. Will the old offenhauser (or other brand) intake manifolds fit?? seems like they all have some cut off pre 1975 and I'm wondering if anyone has used one to convert a 1976 or newer inline 6. thanks!