i own an 81 and put 2k+ miles on it over summer. Will haul 33 mph all terrain all hours of day any weather any length of time you can ride it. Gas milage to tank size isnt good but its ok. i got 34-40 miles to a tank. Puttin carb on is a matter of two bolts and lifting it up, carb mostly was taken off cause it was plugged and never got back to it. Make sure it isnt seized, with open intake it may be. 77-80 are known for windup problems but they ok.