I think the statement (interference with clutch or manual transmission linkage) is a blanket coverage protection for the supplier/vendor. In other words, "legal mumbo jumbo" to do your homework before you buy. They don't want to get sued for brake failure due to a botched installation. The attached picture is an extreme example of the shifter moved forward (Patrick's shifter) on a Saginaw 4 speed and the booster/brake bracket slotted to move the assembly against the truck frame.
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07.jpg (292.51 KB, 263 downloads)

Last edited by buoymaker; 07/06/2022 6:36 PM.

"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."