Mr. Uunderkill's thread got me thinking. I want to upgrade my links before the LCQ race. I know my uppers are 1.5X.250 DOM, I was told the lower's were bigger walled (.380) DOM but I don't really believe it. I have clearance issues on the upper so it has to stay at 1.5" OD. I really want to run aluminum for the memory factory and the bling, but I think 2" OD lowers with my small 3/4" hemis will look goofy. I was thinking 1.75" 7075 lowers and 1.5" 7075 uppers. Will that be strong enough, or should I look into 4130 from Poly?