1967-69 Registry

I have a 67 fastback with the 273 235 hp. It is about 1/2 compleated. You would think it would have been a s car but according to the fender tag it is not. It has a 7 1/4 rear which does not make sense to me.
I bought a new 69 fastback formula s. 340 4 speed 8 3/4 323 posi with
bench seats. It was b5 with blue interior. In the late 70s someone bought it from detroit area. If anyone knows where it is at i have the window sticker. It was bought in grand rapids, mi.
It was in northern mi when it went to detroit.
When it went to detroit it had a 318 with the 340 intake and carb.
It also had the 340 exhaust manifolds. I kept the 340 but 20 yrs later sold it to a guy with a 68 charger. I wish i still had the 340 and the car also.
Stan