1971 Demon 340 T/A build help

i agree on some modern shocks.

as said, you've already deviated from a true replication with some modernized components so i'd stay the course with that.

you may not need a rear swaybar depending on your set up.

see if you can figure out what your rear spring rate is (HD tells us nothing) and then select t-bars that will compliment that.
I like the "Super Stock " springs. Helps to keep the car flat in curves. Remember the TA and AAR's were road cars not drag cars. I agree with an upgrade in shocks, being you are deviating from a stock format. When you present the finish car, the first place a Mopar person will check out is the TA marking on the block. Sounds like you are building an awesome ride. You going to exhaust out the rear or in front of the rear tires?