What intake do you plan to run on your 6.4? Do you plan to run AC? If not running a 6.4 intake, it opens up more possibilities an makes things a little easier. I chose the hard path tho and wanted the stock intake... even after planning and buying a 6.1 intake.
Bringing the motor forward makes it worse.. way worse. I moved forward 5/8" and it was a battle using (modified) Schumacher mounts , TTI headers and a Borgeson box and it was a battle! I literally voided every warranty lol
I chose to go with a stock PS pump from a 2012 (or 13) Scat.. I didn't need more work with a electric conversion.