Driver heater MCI5C

[jjrbus]

The new owner of my 79 5C had an issue with the drivers heater/defroster.   On the 79 MCI5C the drivers heater line comes up through the floor on the drivers side in the rear of the bus, it is attached to the wall and runs the length of the bus around the front in front of the driver and into the heater core. 

Are all MCI5's A,B and C like this? How about MCI 7's and 9's??

                                                                                 Thanks in advance JIm

[Tenor]

7's run the line through the tunnel in the middle of the floor, then it cuts over to the driver's seat outside wall, then wraps around under the  floor again to the core. 

Glenn