like the title says, any of you guys run 2.50 ratio ring and pinion in a 9" before. i have a 3rd member out of ? i got it for the unibody f-100. i'm currently running a 3.25 and it really sucks on the highway. i'm getting about 12 mpg. with the round up coming up i'm thinking about trying out the 2.50's i guess my question comes in, have you been happy with the performance out of the 2.50's? i looked it all up on randy's ring and pinion site on his calculator. with my current tire 25" tall, cruise o matic 3 speed auto i'm turning about 3140 rpm at 70 mph, with a 2.50 gear i'm at 2415 rpm. i'm just afraid my little 289, although built and runs ok now, will be pissed around town with that tall gear.