What you really need to know is where the column will end in the engine deck. This is so you can attach your steering shafts and get around all that extra stuff like headers and such.
that sounds like a better way to ask the question.
http://www.ididitinc.com/retrofit_columns/47-54_60_78_chevy_truck_FS.html#installationkitsIdidit offers one column/one length (in any flavor coating you might prefer) is this the right way to go, or, what other considerations are there from others who like you say been there done that.
btw...no headers..manifold and eventually tie it all in to a power R/P
