It was a 65, I talked to my newest sponsor, Kenda Tires, about the bike and confirmed motor size. Don't remember the make.
As far as bike rental, I'll gladly let anyone here race/crash my bike as much as they want for free if you come down for a race or practice day. It's so much fun. First one's free.
Also, I'm happy with my '99XR for what it is, cheap and reliable, but the newer CRFs are faster probably because the motors are not as abused as the older ones. Parts are totally interchangeable from '87 or so on.