Congratulations…Before you head down the “Restoration Highway” I’d think about the “Spa treatment” first. That looks like a very nice 77 Original 854 paint code LC. I’m going to go out on a limb here and suggest that once you confirm spark, air, fuel and it it starts and stop’s, you just clean/shine/polish it up head to toe. It looks very solid and original. There are several good threads here that can get you started.
@wngrog thas some very good threads Ref: “preservation vice restoration” that can get you started. Good luck with this…
When you have time, post some picks of the front floorboards, rear sill/bumper area and the rear bed.
Do you have the hard top?