Bruce Lancaster
Member Emeritus
On the mechanical parts, you want to get a '39-48 Merc parts catalog. Once you learn how prefixes of part numbers work, you can tell exactly which parts interchange with Ford and which are Merc only. On the engine, start by cleaning up the right front corner of the upper surface of the block around the front of the intake manifold. Most of the early 239 engines, likely including all of 1940, had "99" stamped in maybe 1/4" characters up there to distinguish them from the visually identical 221's on the assembly line.
Body and frame are almost entirely Merc only. I think all Merc tudors, right up til 1948, are very scarce.
Body and frame are almost entirely Merc only. I think all Merc tudors, right up til 1948, are very scarce.