I remember the older threads that someone was making the under-the-intake heater for the 300s. Does anyone make one for sale now, or do I have to make my own?

 

You can still find them if you know the right numbers to ndo a Google search for them. Im putting my NOS shroud in soon and am going to restore the vac lines and relay and delays to spec. PM Number Dummy and see if he can find you some parts and I just found out that thers a upper bracket the the shroud is suppoed to be hung on too. Good luck!