See the factory instalation manual sect 0 sheet 4.00.This is a modification that really turns heads at the shows I show my truck at. I taped the manifold to a 3/8 pipe thread and installed a "T" in the place of the octigon fitting showen in "view B" then followed the pics. Works great, not to mention the conversation it produces to and with other stove bolters.I used a 3/8" break line to run to the manifold.