Yes I believe it is the Tom Daniel Grim Reaper. It was originally released in 1974. I don't recall seeing it in the Revell chopper line before that. I have never seen any box art of it prior.
When I discovered it was the same last year, I got a good deal on a sealed Freedom Chopper. Who knew they would re-release it. haha
It has very distinct parts, such as square (?) forktubes, and the sissy bar,pipes,seat, rear fender.
I'm a MC builder and Tom Daniel collector (builder) so this was a welcome edition. The Freedom Choppers are very pricy, so the re-release is a welcome sight for TD & MC enthusiasts.
Hope this helps.
Yours looks good mocked up. And I like the color choice. Looking forward to seeing more progress.
Check out some of my builds at: http://public.fotki.com/Jim-Richards/