What did you use? One of the 'cheapest' made parts in the aftermarket are shocks. Most box store shocks are junk when new and wear rapidly. Sadly, good replacements are not cheap.
I went with Viking double adjustables. At around $800 for all 4, they're one of the most affordable options for decent quality adjustable shocks. Hotchkiss also makes some decent ones, but I wanted double adjustable.
I can also say that the adjustments on the Vikings actually make a difference. Turned to full stiff, my car will ride like a dumptruck. Set to full soft, it rides like 'stock'. In the middle, it really helps control the wheels the way I expect and has major impact on traction, wheel hop, etc.
Then I added assassin bars - now there's no tendency for the rear to walk around when I lose traction and the wheel hop is completely gone. It also firmed up the rear suspension a bit and will let me soften the ride on the street. Since I'm on street tires, it actually makes it even easier to bust them loose. Kinda spooky having it haze the tires and loosen up in 3rd gear :eek: