Pat, you got 'um.
I'd love to know what the difference between a Power 6 and Turbo 6 is. If he's referring to the all red 6, that came out in '85/86, certainly not older than Turbo Buicks (unless he means those SBC/TurboBuicks).
I also found a V6 logo on this '77 Century. I have to find out what year this car was done. Molly did the paint and I think this is when he came up with the V6 logo.
PS - notice the Vector wheels