Originally Posted by
VRJAKE
Thanks for the suggestions so far. I like the 57 T-Bird color suggestions from rccardr. Have a set of original decals, wish the paint color to mesh with those. Sending it to Franklin Frames for a pro paint job.
On the French BB, Jim Merz was one of the earliest to gain approval to build with 753 (per his account). When first offered, 753 was only available in French tubing diameter sizing (Imperial?), which is a bit smaller diameter, necessitating use of a French BB shell, hence the French BB threading.

French or metric downtube and seattube slightly smaller at 28mm OD, top tube slightly larger at 26mm.