check out www.yearone.com they did a 66 mustang 4.6 with 6speed conversion... i'm sure you can email them and ask for more information if they dont have everything you need... the sensors is only a semi issue... only one is located out of the motor and thats the o2, you just hafta install it into your exhaust pipe... as for the computer... they make one for about $100 that can be setup and plugged into a laptop to configure all the settings in the 4.6.... and motormounts... they make special ones to mount up to old ford style motor mount brackets like what you've got put in your stud.... check out www.laurelmountainmustang.com for help with those... most of the help your gonna be getting for this swap is from mustang guys... theres a few 66 mustangs running 4.6s and i have a feeling you'll see quite a few more around in the near future