First tank got 22 and it looks like the 2nd tank is getting even better will know in a couple of days when I gas up again. I'm not sure about the stripes yet but my wife really likes the 71 RT style of stripes so we sill see how it turns out. I got the Go-Wing spoiler yesterday and will try and get it installed this weekend if everythings works out time wise. I'm going with a black spoiler and stripes on the Challenger.