Thanks for chiming in.

Status so far; PA-24 400 wings, Twin Comanche landing gear ? ( I seem to have read somewhere that the Twin Comanche had the same main gear as the 400), Lycoming O-540 or IO-540, speed up to 250 mph.

Not much I’m afraid. I have tried contacting the Piper Museum archives, but not heard back from them yet.

Stepwilk: Would appreciate if you could check with Dick Collins if he knows anything.

The only known photo of it on ground:
[ATTACH=CONFIG]255808[/ATTACH]
Comparing this to photos of the PA-24 or PA30, it seems the main gear has been extended a little.