I just put 2012 Chrysler 200 seats in my 65 B. Had to take just about 2" out of the seat mounting legs , but not all 4. I just put the seat uo in there sat in it and looked at it . Had the wife sit in and looked at it from out side. . before this I set the power settings in the middle . I cut an inch and then 2 inches . Felt it looked right. welded up some 1/8" plates for the bottom of the legs, marked out on the floor and welded some 3/16 plate to the floor at each leg. The front outer lined up with the factory brace and hole .