Found a complete drum to drum 9" from a 74 Ranchero for $75(non posi). Think it measures 54". Can it be used in my 79 BU? Do I just buy the upper control arm brackets from Currie and weld them on,new upper/lower control arms,relocate spring/shock mounts and bolt it in? I realize I will need different rims and brake lines but what else. Don't have a shop close by that has a jig to weld on the upper brackets but if I measure and take my time to get those right, is it a hard swap? Basically let me know what needs to be done and any tips on the install.