M12 dipstick tube bracket

The back bolt is correct. The other rear bolt would secure one end of the spark plug heat shield if you have them. Make sure your dipstick tube has the round metal gasket at the end where it enters the pan. It looks much like a garden hose washer made of thin metal. .

The dreaded Borg Warner dipstick tube is the bane of any and all passenger side exhaust types

A google search of installing headers with a M12 a/t transmission dip stick tube came up with multiple AMCFORUM threads posted on the subject. Does not seem the M12 a/t dip stick tube is compatible with free flow exhaust manifolds or any set of headers. So I laid under the car looking up to find a solution working with what I have. See last post. Tomorrow, going to Home Depot to get copper flex/bendable plumbing tubing 3/4" x 30" to make a pattern with. Then shape original dip stick tube to match as closely as possible. May have to cut and mig weld. Also have oxy/acety to bend with. Then if necessary, take a slice out of the intermediate 2.25" dia. exhaust head pipe and bend a wee bit away from the a/t filler tube and mig weld. I'm "winging it". ....not winning it yet. 

After reading your post sweatlock... thinking I'm doing something wrong. Yeah it's tight where the tube goes so I removed the dip stick tube, installed the damper and intermediate pipe and then mounted the dip stick tube last. And, this order of events worked! The dip stick tube does need to be dimpled a wee bit to clear the exhaust flange below the heat riser valve (damper). Adding the dimple will allow the bracket to be secured by the last exhaust manifold bolt. I should note that I ordered/installed Walker factory replacement intermediate 2.25" exhaust pipes for a 72-73 Javelin to mount to the '73 free-flow dog leg exhaust manifolds and dog-leg cast iron heads on the '68 AMX 390.