tuck the 273 in a corner of your garage, and pick up a running, lower mileage 318 magnum. get an eddie RPM air gap for magnum motors. get some hughes #1110 springs and their retainers, and their camshaft snout extender to run a fuel pump with an LA timing cover. send the cam to Tim at bullet cams, get it reground with their HR259/316 lobe for both the intake and exhaust. if you tear down the motor to rering/regasket/rebearing, do the head porting mods Dulcich details in the may '05 issue of mopar muscle (biggies, opening up the pushrod pinch, and getting a good 5 angle valve job, and opening the VJ up to a 1.9" seat intake, 1.605" exhaust). run headers, and a 600 carb

will be a solid 300-320 HP an returned 18.6mpg with the last tank of gas in my 5th ave....