RoseB.
I intend to use standard pickup rear fenders on my 'burb,
They are obviously too wide and need to be trimmed as well as new mounting holes drilled.
I have not permanently mounted mine yet,but after a quick trial fit, the standard pickup fender looks like it would go on nice and easy.
And, if you happen to want more clearance for wider tires, this can be allowed for by where you drill the mounting holes.
Trial fit an ad 1/2 ton fender and see what you think!
Good luck.
Ter