@bosswrench posted:*- Agree. My #4366 did not have them either but I've heard of a few '72-1/2 L's having them as well as most '73-up cars. Simple flat 8mm/5/16" thick bump-steer spacers have a part number listed in later Illustrated Parts Lists and in the European GTS/Gr-3 Supplemental Parts Lists, but like most Pantera upgrades, there is no hard date for their introduction. I call it an 'L Model Thing' that carried over to '80s wide body cars at least thru the '87 GT5-s cars.
I had purchased my offset poly bushings from Hall as a kit over 20 years ago and can't find any on line listings for them now to help others with this situation.
Can anyone here point to current vendors who offer them?
Quote: "It is surprising - I do think you can get the settings close on the garage floor with enough care."
Who love's ya' Babe! 
Camber and toe in are EASY. Toe change is more work but doable. Compare on the ground to hanging and see if there is a difference.
Castor is difficult to do accurately without an accurate machine. You can only estimate it without it.