Originally Posted by Orphantrain
was a 1200 pound leading arm axle with a 22° up angle and without brakes
The best choice would be to switch to a 2200 pound trailing arm axle with a 0° angle and a 5 on 4-1/2" bolt pattern.
You can still buy a leading arm if you choose as well as a 4 bolt wheel pattern.
Don't save your spare bearing set as the spindle is larger on the new axle
are available and would be a good choice.
Our first fiberglass trailer was a 1973 LoveBug, we loved it....