It is a good thing that I am in no hurry. As time passes, I keep getting more and more ideas and suggestions. That is a good thing.
I like the idea of buying new, but I am also tempted by the suggestions of going with a used OEM seat. I would prefer something from a 08-15 Challenger. The wife and I have a 2015 Challenger R/T with the standard interior and the seats held me in place just fine when we had the car at Willow Springs International Raceway last Spring. They are quite comfortable. I don't need the airbags, but a power seat with lumbar adjustment might be worth the weight penalty. I'll never race this car in competition so carrying a few more pounds isn't a big deal.
I checked ebay and noticed many vendors selling full seat sets, front and rear. I have no interest in the rear seats though. I'll probably check local wrecking yards to save the shipping costs.