huh? i get 24mpg on the freeway with my 22R with my heavy swampers, and don't have to worry about smashing stuff with a 350. not to mention that 350s suck and are overdone.
gewehr43 is talking about getting something like 15 mpg out of the 22r he has. most carburated 350s i have dealt with get that and if you step up to fuel injected you can get 20 out of it.