Input for 340 upgrades

Hey Flyfish, was a bit of sarcasm on my part. I meant to say run 10's & get 33 mpg. Actually I do want it to be quick with out dropping a fortune in it & relatively steerable. Realize ya can't have the best of both worlds.
Can you.
best i could do was 12's and 22mpg with a 340 eddy heads and a gv overdrive