Has anyone put the fiberglass bumper bar from MSA onto a 73 240z before? If so what are the modifications/fabrications that need to be done to the stock bumper mounts? Does anything need to be added as well? (i.e. plates welded on etc) Thank you.

You just need to remove your existing monster mounting brackets and get a pair of the early bumper brackets. The holes are there to mount them on the inside of the rad area just under the hinges. Just need four 10mm x 1.25 35mm bolts and washers. See if Norm at zeddsaver.com has a pair, he's real close. If not, put a Want to Buy ad up here.

That worked perfectly for me, thanks!