I think you should just stop and sell me the car for 5k.
If not, I'd at least clean up what you can to help preserve the car. Wire brush and paint will help protect until the day comes when a well deserving resto can take place. Take your time to not get overspray where it shouldn't be. It would likely be a lot easier without the new exhaust in the way.
You didn't ask about the exhaust, but IMHO, I'd stick to a stock looking dual in/out muffler with resonators and splitters out the bottom. Why change such an original car?
I used to be indecisive. Now I'm not sure. I feel like I am diagonally parked in a parallel universe. 1968 400 convertible (Scarlet) 1976 T/A - 455 LE (No Burt) 1976 T/A New baby, starting full restoration. 1968 350 - 4 speed 'vert - 400 clone (the Beast!) 1968 350 convertible - Wife's car now- 400 clone (Aleutian Blue) (Blue Angel) 2008 Durango - DD 2008 GXP - New one from NH is AWESOME! 2017 Durango Citadel - Modern is nice! HEMI is amazing! 1998 Silverado Z71 - Father-daughter project 1968 400 coupe - R/A clone (Blue Pearl) (sold) 1967 326 convertible - Sold 1980 T/A SE Bandit - Sold