Re: Control Arm Cracks
Support the chassis on jack stands and the front axle separately on jack stands and remove them. You can use a ratchet strap to pull things back into place when installing them.
Weld up the cracks and "box in" the bottom with 0.125" strap. Replace the bushings if bad and save the $540 for something else.
Four time Baja 1000 winner, four time Baja 500 winner. Solo'ed the Baja 1000 to LaPaz/Cabo twice.
4-Wheeling since 1972, Desert Racing since 1989.