I own a 1975 LTD Landau with a 351M. I have read pages describing what it takes to modify a F150 to have a 460, but have seen nothing for the cars. I was wondering if anyone knew the changes I'll have to make. Also, I have a 351C in the garage and was thinking of stripping parts from it to put into the 351M. I have seen where some parts intermix and was wondering if that would beef it up some. The only reason I want to make changes is that the 351M is getting worn out and frankly does not have much power to tote around the 5000 pound car any more. Anything helpful will be much appreciated.