throttle body's

i've been looking at pre '95 throttle body's to see if there is anything that i can use on my '89 ram 50's stock 2.6 intake. i've found a couple that i think i could use that would require very little machining to adapt. does anyone have a suggestion as to a good throttle body. i'm tired of the carbs and am trying to find a good F.I. intake manifold or throttle body setup. i bought an '89 power ram 50 4x4 a few months ago and the previous owner had modified the intake to accomidate an older ford one barrel carberator (i'm assuming from a 300 straight six). the thing runs like a beat dog but gets 9-11 mpg on a good day. just want something that will be more efficient that i can put on it and my new motor for my other '89 power ram 50 4x4. suggestions are great.