You are describing a small block intake for all 218/230 Mopar flatheads (40's-50's).
There were numerous mfgrs, each with a little different design.(Offy, Edmunds, Tattersfield(sp?) and others. The small block has a 23" long head and the big block is 25".
The manifolds mount on the right side of the block so the front bolt hole is at the 5 oclock position. The picture is an early Edmunds with water heat.