Gungearz,Lowes: 8' of 3" ridged dryer flex tubing was $9... I moved my heater system into my cab and used about 2.5' of it...
I'm going to do a search for bringing the heater system into the cab, like you did. I would imagine the heater box is over by the passenger's feet...did you still bring in fresh air from the fender scoop or just air from inside the cab? Then just (2) holes for the (2) water hoses, I guess use the 4" hole coming from the fender scoop, make a round plate with 2 1"holes... any pics of the way you did yours?