Hey mate.
I was running an 1800 bus box in my bug.
Before I fitted Thing stub axles and lifted it I was just running bug axles with Kombi CVs on the inner and bug ones on the outer.
Didn't have any issues with them binding. I ended up drilling the hole in the end of the axle a little deeper and tapping for an M8 thread. Then using a large flat washer and button head allen bolt to hold the inner star of the CV on.
There is some pictures in my thread on page 30 near the top.
http://forums.aussieveedubbers.com/viewtopic.php?tid=80275&page=30
My box was mounted about 15mm back from the stock bug box location. You should be able to run the bus CVs no worries but your best bet would be to assemble the CVs and axles dry with no boots and then remove your rear torsion bars and fit the axles. Then you can jack the arms up and down and cycle your suspension. You can then check the freeplay in the axle at full bump and droop aswell as when it is level between the box and trailing arm.
I hope this helps. If you need anything more just ask mate.
Smiley
🙂
If you said I was a Volkswagen man, you'd be right.