i recently purchased a 1965 kenworth truck that is registerd motorhome in montana...the dmv say,s this cannot be registerd here..has to be comercial..if anyone can help me i sure could use the help on how to get it registered here motorhome..i think they are just trying to intimidate me because i dont know the ins and outs on how to do this...

Depends if it's actually got a MH enclosure on it, or if it is a straight tractor registered in another state for recreational use?
CA will NOT accept any straight truck/tractors anymore for so called RV usage.
Grab a PO Box in Arizona and register it there or pull a Montana LLC and leave it registered up there?
Good luck!

for now ive registered it in montana..thanks

The truck is a 1965 so it can be historic or read vehicle code section 9400 d which states "This section is not applicable to any vehicle that is operated or moved over the highway exclusively for the purpose of historical exhibition or other similar noncommercial purpose."

historic is a lot cheaper than the 9400d route