Your choices sound and look great, I'll be following this build. I've had a couple of these kits in my stash for years. One will be Joe Weatherly's #8 NASCAR racer and the other stock. I have a few pictures for reference. I thought I could give you a hint about what the interior looks stock. If you look close, you'll realize the model interior is a convertible. AMT saving money back in the day because these were also used in their promos. The engine is a 427 FE (Ford Edsel) The super charger is a Paxton if I'm not mistaken.
Mercury Park Lane Marauder convertible
Mercury Park Lane Marauder convertible
Mercury Park Lane Marauder 2 door hardtop
Mercury Park Lane Marauder 2 door hardtop