Yeah it wasn't cheap in the first place but I took the chance and bought it as I prefer original over repro. Seems it won't fit though according to what others tell me. I have heard stories there are varying levels of quality with the repro caps so is a bit of a lucky dip to get a good one.Maybe yes, but!; It will be cheaper you buy a new Montreal cap and store the original GTA cap. Because of the price for original GTA parts. You will get min. the the price twice from a new Montreal cap.
KEEP the GTA part!!!!!.
Hi Gordon,The early GTA distributors have a larger diameter rotor mount shaft than some of the later Marelli GTA and GTA jr distributors. Caps do interchange. I have modified several Montreal rotors to work with my own GTA S119A Marelli distributors. The Montreal cap is not as robust as the old greenish GTA caps, but does work.
The value of having a real GTA cap on an S119A Marelli distributor on a real GTA engine, makes the Montreal cap better suited to a Montreal engine.
Yes, the original GTA caps are much more costly than Montreal caps, new or used.