Im going to be lowering my trans am this winter and I have noticed to kinds of lower control arm relocation brackets...weld on and bolt on. I always thought and heard to weld them on (obviously going to be stronger) but would just bolting them on be strong enough? I believe spohn only sells weld on but BMR has both.

 

Bolt on's will be fine. Now if you plan on major power, gears, and slicks you may want to weld them. But for a fairly stock car with street tires you'll be fine.

 

The bolt ons are error proof. You can bolt them on and put some welds on them as well. The weld ons you will have to measure and its possible that it can be installed a little off.

 

Mine are welded. The weld in version is cheaper, and most times you can get em welded in for pretty cheap. As for brand, its pretty hard to screw up a relocation bracket, so its not too important of who you choose.