Weld-in is definately the way to go. Bolts tend to come loose or all of the force of the frame causes them to stretch the holes and come loose that way. As Far as brand, it really doesn't matter as long as they are sturdy, Maximum Motorsports tend to be pricey(your paying for their name). I have Steeda Weld In Sub-frame Connectors, their priced fare and top quality.
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