I would think for this use, a good set of rear air shocks would help also.

The best hitch in my opinion would be one bolted to the frame.

They are pretty good BOF cars, 1985 being the last ones using that "box" body style from 1977. They were very popular in their time. A whole bunch of them went to Kuwait, Saudi Arabia, and Iraq, where some are still going.

A long time ago, when I was shopping for a company car to buy I saw a 1978Olds Delta 88 coupe that someone had towed a trailer with.

Its hitch was a bumper mounted one, and the top of the bumper was bent back.

I bought a lease return 1977 Olds Delta 88 Royale coupe instead. I stripped off the GM monolithic Catalytic converter, and ran a custom straight dual exhaust on it.

BLATANTLY illegal, but man, it really let that 350 - 4 bbl motor fly.

I put a CB radio in that car and drove it all over the place. It hauled A$$, those big GM engines were really good back then.

__________________
1991 560 SEC AMG, 199k <---- 300 hp 10:1 ECE euro HV ...

1995 E 420, 170k "The Red Plum" (sold)

2015 BMW 535i xdrive awd Stage 1 DINAN, 6k, <----364 hp

1967 Mercury Cougar, 49k

2013 Jaguar XF, 20k <----340 hp Supercharged, All Wheel Drive (sold)