I've looked into doing this swap as well. A few people have done it with cars that they only take to the track, I don't know of anyone with a street car that has done the swap. Like stated earlier the dash will be one of your biggest difficulties. You might also run into issues with your A/C if you plan on keeping it. I have not been able to find a way to mount our TR-3650 to a 351, however you can fit a T-5 if you can find a way to link the shifter to the transmission. You will also need transmission mounts and a custom driveshaft if you go with a T-5. I believe someone makes a K-member that will mound to a s197 chassis and 351, which might be easier than making custom motor mounts. There are a couple other things you might have to modify, like the fuel system, to get the swap to work. There is also a DVD of someone who has successfully done the swap showing how he did everything.