Looking for a front bar for my 1972 B200. Addco has a listing, part #181, that is no longer available!! Does anyone have one laying around? Or is there a factory set-up that works on these early B-vans? Don't think the later models work either. Anybody running just a REAR bar? If so, does it handle weird, push into the corners or any other ill effects?? Thanks in advance for any help!!!!!!