Yes, as Reid says... Welcome to FiberglassRV.
And, I agree with what he said. Your trailer is 33 years old. If it's a torsion axle
, it could be past time to replace it. That alone will give you some height. By time you cut off the axle, weld on spacers and put the axle back on... unless you're the welder, you may end up spending as much as a replacement... or within reasonable cost. If you replace the axle, consider brakes
. You'd never regret having brakes
Check with Paul Neumeister at FibreglassRV.com
. He probably has just what you need. Although you'd need to have it shipped, it's possible shipping won't be as expensive as you think and you'd get exactly what you want.