I’m not in the market to buy, but am curious.
Would you mind sharing how some parts are purported to be new and some others are off your ‘21 GT?
Did you get some parts replaced on warranty?
Did you buy parts over period of time, only get to install a few, then decide to go another direction?
Also why you are selling? Going another direction?
Selling the car?
This type of background may give prospective buyers ideas or insight into the parts and may inspire enough confidence to pull the trigger.
Either way, good luck with the sale.