If I could do it again, I would rather have a set from HRpartsNstuff.
I (and at least two other friends of mine) have had our frames welded and reinforced becuase of the damage cause by these bars and hard launches. They work great (1.54 60' on 5# launch) but after a while they will either break the welds on the forward mounting brackets, or they'll "ovalize" the mounting holes.
Even if I went with the HR control arms, I'd still get their brackets welded in.
-Banning.