My '97 has:
Stock springs with 30mm dobinson spring spacers
Tokico / stock shocks
285/75/16 Michellin LTX around 35 psi
ALL suspension bushings / rubber replaced in recent years
Added a few degress of caster to increase front-end tracking...
My latest 80 was all over the road till I tightened up the steering box. Do you have much slop in the steering wheel turning left to right? You should only have to back off the adjustment screw about 1/2 turn after bottoming it out.
I used the f body oil pan on a swap about 12 years ago I also modified it for more driveshaft clearance it also doesn't have the mounting tabs for the starter wiring that goes across the front of the oil pan this was also used with truck style...
I run Ron Davis radiators with twin Spal fans and shroud. Anything over 35 -40MPH and the fans kick off. No overheating problems.
Indeed, they are not cheap, but neither are the radiator packages I am provided for that price. Guaranteed by a...