if you change k members the only direct bolt in one will be from a 67 v8 car as the idler arms are different you can put a 68-72 in it but you have to change idler arms also but i believe that is all and if you go with the spool mount k frame from 73-76 i believe you have to change the whole front steering set up to go with the k frame and suppousedly the spool mount are the best because of the design you dont break motor mounts if you have a healthy engine but if you put a torque strap on the 68-72 or the 67 k frame you wont tear up to many motor mounts either. Again like gtx said you could also go with the kit from schumacher i believe that kit is about 150 plus shipping Good Luck Justin