Hey bnorth, forgot to welcome you to the site, hope you enjoy it here and stay a while. The steering colums are mostly the same on E bodies from year to year but the trim is different. 70 columns will interchange with 70, 71 through 73 and then 74's will all interchange in like. In like meaning auto on the column, floor shift etc. The shaft itself is the same length between years but the manual and power steering shafts are different lengths, you must use the longer column for manual and shorter for PS, there is an aftermarket coupler that will fill in the space if you go to manual from power. If you go to power from manual, you will need to have a shorter shaft and I believe if you do a search here on the forum, there is a thread talking about shortening the shaft. What did the other setup come out of that you are inquiring about? If you are going for absolute correct, I'd use the one out of the same year. Just some things to consider. I have a 70 Satellite that the crush band is tweeked so am using a column out of a 66 Belvedere, just changing over all the trim and steering wheel items, it'll be exactly like it was when I am done but have the older column. Good luck with it, have you posted any pictures yet? We do love pictures. Probably more dialog than you needed hope it helps though.