Hi Folks- Newb here. I have the opportunity to buy a 1967 P11 (serial 121168) that is reasonably complete and in running condition, but is in need of fettling to be roadworthy. It's in need of a repaint, could use a new seat, has the wrong air filter and was converted to magneto ignition at some point. And, naturally, it will require all the old rubber bits replaced. It appears to have 8400 original miles on it, and I would label it as being in "good" condition- or about a 7 out of 10, mostly for cosmetic reasons. I'm having trouble finding a solid relative value for this machine. Any pointers? Anyone care to suggest a range?