Buick shock reccommendation? 1972 GS

I'd like suggestions to upgrade the shocks on a 1972 GS convertable, the rear spring might be sagging a little too and could be replaced. I'd like something heavy-duty.

Thanks, oj

I'd like suggestions to upgrade the shocks on a 1972 GS convertable, the rear spring might be sagging a little too and could be replaced. I'd like something heavy-duty.

Thanks, oj

Shocks won't help the sagging springs. Fix that first. The "upgrade" choice is yours and ranges from Koni at the extremely expensive end, through a number of mid-range aftermarket gas shocks (KYB, etc), to near-original replacements such as Monroe Gas-Matics. There are about a bazillion upgraded shock choices for the 68-72 A-body cars. Your money, your choice.