Mike I had the same problem with my 460. When I put it in the 48 Ford F1, I hadn't ordered the headers yet. At that time I bought a 460 motor mount kit for the truck, and mounted it as far forward as it would go. I then had to make tranny mounts to fit that location, as well as adjust the drive line width to fit the differential. Flash forward a year when I went to buy the headers that Sanderson makes for this year truck with an after market 460. They are tight but workable on the passenger side, but on the driver side the collector is too wide to fit between the motor mount and the steering box, even though it is designed for this setup. So now the choices are modify the headers to work, or pull the engine out move the mounts forward cut frame members to avoid the timing pulley in front, design new tranny mounts and lengthen the drive shaft to accommodate the headers! So I have sat and pondered what to do(the headers are ceramic coated, with a nice polished aluminum look. I thought of calling Sanderson and see if they could shorten the place where the collector comes down by the steering box. If they could do that, then I could get a collector thru the tight space between the motor mounts and the steering box, making life much easier in the long run!