Randy,
Go to
http://www.fly-imaa.org/imaa/IMAAads...miscplans.html for your
TBD plans. They are offered in two sizes, 58" and 81.25" wingspans. I don't know if cowls or canopies are available but a phone call would answer that question.
I've always liked the looks of the Devastator and its involvement in the early stages of WWII combined with the courage of the crews who flew it make it a warbird with character. This would be a fabulous scale subject! Good luck.
Al