what If I did different engine sizes on the back.
one with a 396, 409 etc... think that would sell?

Oh I forgot to tell Derek69SS, great eye. That was pretty impressive

396 and 454 would probably sell, maybe 350 too, since those were available with that style SS emblem and stripes. 409 would require some sort of 61-65 Impala emblem and/or crossed flags instead of the stripe.

Sounds good Derek69SS - You just got yourself a free shirt... When I make them of course
Thanks for your help

Derek69SS send me your size shirt - I'll have the shirts by Friday
I have it in black with a red stripe and SS and white with a red stripe and SS
I left the back blank

Sounds like you have made progress.
Ray

Yeah It's been on my mine and I really wanted to get them done.
I keep the back plan seeing how that seem to be the biggest issue.