You’ll have no issues. There are replacements bolts on my 50 that have probably been there since the 70’s
Bolts on the upper shock mounts is a pretty common repair for the hobbiest. Plus some of the locations have blind holes. So it would be difficult (not impossible) to re rivet.
Good tips up above
The crossmember on my truck is designed to unbolt. Not sure if thats true for your year.
Good luck
