I also had my 706 and 706MkII in my Dodge 2500 but it was an automatic. I ran fused pos and neg wires from the battery terminals out the fender well and thru the opening to the door and then into the cab thru the side of the passenger compartment. I used a PVC mount but you have a stick shift in the way so I would suggest you put the radio under the driver's seat and secure it there and then run the remote to the head on the dash. I used a dash cover and mounted a speaker to the dash cover with a firm backing to support the thing. It should also work with the radio head. e-mail me at email@example.com
if I can help further.