[green912]

Anyone know if the J boxes are available in the aftermarket, if so how much?
Also, I have a hole in the tube that goes to the front of the engine (in the J box assembly). Can I get away with patching that (welding in a short piece of tubing, or replacing the tubing section) piece? Is it under exhaust pressure, or is this part of the hot air system?

Also, what is the deal with the vertical "smokestack" looking part of the heating system?
is this usually deleted by owners, or is this something good to keep ? the thermostatically activated flapper system is something I am restoring, but if it is routinely removed, I'd like to know and why.
cheers
Kevin