I have an HDK and went with the QA1 promo star shocks. These were on the recommended list by Denny. Car is still engine-less so I can't speak to the ride.
-QA1 7888-109 Coil-Over Thrust Bearing Kit - Qty 2
-QA1 DS403 Proma Star Coil-Over Shock, 15.000/11.125 Ext/Comp - Qty 2
-QA1 10HT550 High...