I agree, weld them in, and while you're at it, get the ones that allow you to move your springs inboard a couple inches and get the offset spring hangers for the back. Have the same guys that weld the connectors in move your spring perches, or better yet, find that 12 Bolt and have it fit in. I know this all sounds like lotsa money and may not be in your budget, but if you do all that stuff at once, it's cheaper in the long run. Being able to stuff a bigger tire under her with the springs moved in will make it a better streeter for sure.

Good luck

Pat