Well.... I took a picture of my reptarium with the perch across it. Hopefully this will help you understand what I mean. It's a pretty basic pic but I couldn't hang a wheel for a demo because it was dinner time!
I modified my original idea, so I'm not using this method anymore for the feeding dish (see my other post!) but I still think it would work for a wheel.
All you have to do is place the bar/perch/whatever you find across the top like I did in the pic.
Next- from the outside/top of the rep. push at least 2 zip ties through the mesh but don't make any loops yet.
From the inside hold your wheel *upside down* <img src="/ubbthreads/images/graemlins/tongue.gif" alt="" /> and with the other hand try to make a loop around the frame of the wheel, then back up through the rep.
Connect the two ends but make sure you include the bar/perch/whatever in the loop.
I think the PVC frames on the stealths are like a square or rectangle- so maybe you should consider using two bars/perches/whatevers for added support & stability. Just place them parallel to each other.
I hope this makes sense- and if you try it, make sure to share your pics!
When the colony is moved to the 5' cage I'll convert the rep back into my normal travel cage for Roxie & Stitch- and I'll probably use this method to hang their wheel when we go on trips!