John Kemp & I rode at the "World Vintage MX Championship" at Glen Helen California in 2003[ some respect please,we are both world champs]. They had an XR75 class [about the same speed as Pre75 125 Elsinores] They were spending upwards of $US10,000 in 2003,to make these things competetive.[about $13000 Aus,8 yrs ago]