goirish,
Sorry about the lost PM...it's all covered in my post here except for info on the cowl....it came from Fiberglass Specialties and it's listed under Dan Santich's Cobra....It has large cheek cowls and would house your twin 50 just fine.

Gray Beard,
Engine size is about 50cc on up...the first one I saw was a Tartan twin (about 50-60cc) at the QSAA in the early 80's...my first one had a G62, second one had a ZDZ80....the DLE55 is a perfect choice I think.

My bench might just get a good cleaning so that I could join y'all in a winter build of the Cobra.

Steve