Hey guys new here i have a 1958 chevy fleetside with a straight six 235 id like to be able to cruise when im done... is there any combination of tranny and rearend ratio i need to use to get descent hwy spped plus descent gas mileage... id ideally like to swap the old three speed on the columb for a aoutmatic or 5 speed manual tranny... can this be done.. and what about a 2brl or 4brl carb swap vs the old single barl...
