you traded some used mufflers for a whole parts car??? Man are you a used car salesman? Fantastic deal. I see you have landed some other killer deals too. it looks like you may get around that "double your budget" gremlin after all. It's looking nice.
Did you get all the kinks worked out on the dash harness? If not I have one that I converted I would let go for $20 to cover shipping and the trip to Montgomery or if you are in Alabama, come by and I will see what I can load you up with to help out.
If you haven't run into this yet, you will need a new sender in the tank to match the new style gauges. I used 2 hose clamps to mount mine and bent the float to look the way the old one was.