Having participated in many front subframe changes on round track race cars due to wreck damage, read and heed Martin's advice! It's vitally important to get everything straight, square, and level before doing anything beyond tack welding. We had the advantage of having several chain anchor points in the shop floor, so the chassis and the front frame clip could be anchored down and leveled, using screw-type jack stands that were intended for bracing travel trailers in a campground. Any error you build into the frame will be there forever- - - -"the gift that keeps on giving" handling and alignment-wise!
Jerry
