My right thumb !! That sled amazed me on how good gas mileage it got . Depending on your thumb I would guess 10 + mpg. Depending on the last owner and your skill level I would take the carbs off and bring them to the dealer and have them gone through . They will sync them replace old jets and clean them for ya. Then when you put them back on make sure you give the choke cable enough slack so you dont run into other problems. New set of plugs , not the br9es . And she should purrr.
Like the sign says "Speed is a question of money how fast do you want to go"