I am getting back to bike commuting and I am looking to pick up a vintage steel frame as a project. I currently have a Klein Pinnacle that I don't ride (I used to be a lot heavier but as I have become more fit and older I find the Aluminum frame beats the daylights out of me). I also don't ride offroad mich anymore.

I am looking at an older Centurion Commuter 5 and a few older steel MTB frames (Giant Sedona ATX, Iguana and a Bridgestone MB6 that are all about $50). Any suggestions? I'm probably going to cannibalize the parts off the Klein frame if I go with an old MTB frame. I am figuring the Centurion Commuter 5 will need a road gruppo and probably no triple chain ring...correct?

Any suggestions?

Thanks in advance.