need advice on headers for lowered 72 with 4 speed

[jtwells]

So I have a 1972 c10 short bed. The engine is a 350 in the I6 position and a muncie 4 speed. The truck will also be lowered. I'm looking for a header preferably mid length that will fit also not interfere with the Z bar. From what iv read the headman header part number 69010 and 69020 will fit but I haven't heard anything about it fitting with a manual trans. Would like to know what your using and if it fits with a 4 speed. Thanks