sj_valley_dave wrote on 10/07/09 at 2:14pm:What we did was weld on the screw in collar to the lower A arm, and then you can use a screw in ball joint instead of a tack welded one...a heck of a lot easier to change at the track if need be. A big crescent wrench and your done...Got them from Southwest Speed
Yep, and they now make an adapter sleeve that you press in then tack, and it is threaded on the ID so you can run the screw in's.
But I dont know if you can press them in the stock hole, I know they press in to the 2.190 (big Impala) size sleeves.
Victory Circle has them in stock