wheels for vietnam gun truck

Don't know of any, but you would have better luck posting in the Large Scale Armor Forum or the Armor/AFV Forum at Armorama.  There was a guy there who scratch-built an M35A2 and there are a few others there who are guntruck gurus.  A couple old Guntruckers from Vietnam too.  I'm sure they can help out.

I don't know of any place that makes them, but I can give you a couple places to look? www.greatmodels.com www.hlj.com  are a couple, if you buy FSM magazine you can look in the back at the dealers index, they have them listed by types, armor, aircraft, etc, etc. I hope this helps and good luck Wafu!