Will a 73-87 front crossmember use components for a 72??

[jkade]

I may have found a deal on some tubular lower control arms and a 73-87 crossmember that a guy bought with a project truck and he isn't going to use any of it. The crossmember has been cut and set up for a rack and the tubular lower arms are new with balljoints and are for a 87 down. Will my spindles work with this and I would buy some tubular uppers also.