> On 25. Jun 2017, at 16:11 , Keith Park <topnotch at nycap.rr.com> wrote: > > the GC is the block my 2056 has and thats a 73 case, didnt the 76 have > a GA case? The GA preceded the GC. It was before the 1975 model year. The 1975 model year had EC (1.8, just like the 1974 412) and GC (2.0), and the 1976 model year had GC only. jens