Thanks for the additional information. I have the complete steering linkage from a 73 valaint signet that had a six in it. Was planning on using the 73 duster disk, calipers and upper control arm with it. Will the pitman arm still be an issue ? Also if I use the 273 in it are there mounts that will work with the spool mounts on the Kmember. I have a larger Kmember that I took out of a 66 Dart , it was meant for an 8 but I can't ID the member. Also that member has the weeker idler arm mount that will not accept the 73 linkage which seems much better then the original 66 that I'm building. Any help on Identifying the member would sure be appreciated. Also, does anyone out there know if the 66 Six will mount on the spool mounts on the 73 Kmember ? Thanks.