the El Tigre's were pretty reliable sleds engine wise, body wise they weren't, you can probably put up to around 6k to 8k miles on them depending on how you ride it, they weren't the fastest, cause they were meant to be trail sleds, a 550 will probably do anywhere from 65-80 depending on conditions, you could maybe squeeze around 70-75 HP out of it, around 12-13 mpg, and clutch issues and body issues, other than that it was a nice trail sled