Hotwire or S&P?

i have been doing my research for putting a 1998 5.9 motor and trand frm a ram into a 68 barracuda, I want a gd driver, PS,PB EFI and trans with OD. i noticed that booth of these companies are located in Mesa Arkansas. strange i thought. I am leaning towards hotwire since they are more into mopars and S&P is more GM:(. i was going to use the factory harness from truck like badass but i woulk like to use 8 3/4 rear and have my speedo functional,as well as the hotwire looks much simpler. i was wondering in anyone has used either of these companies and how was the product and assistance with it?