I'm looking to mostly improve the fuel mileage on my 92 auto equipped 12 valve. Bone stock I'm averaging 21.5. I know a torque converter and injector upgrade would probably be the best mods for improving the mileage but both are rather expensive. So I'm wondering if any of you guys have some tips and/or feedback on things like intake/exhaust mods, and cheap and simple fuel mods like the DennyT fuel pin and 3200 governor spring mods.

Also if you guys know of places or have links for good places to find stuff for these would be great as most everything I've found so far is for the 94 and up trucks.

Thanks