I've been going back and forth lately on the direction I may go with this build. I thought I'd throw it out there and see what folks think.
Stock vs aftermarket ?
Depends on your wheels. What are you using? Your engine compartment is modified but you can hide that with the hood being closed.
With my wife's Cuda, I'm going with later model reclining seats but going to have them sewn up like the stock pattern. Also going with an electric adjuster under it.
Cars are 45ish years old so I try to leave them looking a little like stock. My 2 cents too but it's your car.