Thanks to all for the input. I'm convinced the original Marelli switch has some issues (unvailability being one, certianly) and I'm now leaning toward a Bosch solution instead - cheap & eminently doable, better than the Chinese part I currently have.
As for the shift linkage the proximity of the one U-joint to the header looks bad. As you know everything is really tight in that area....will try to take a photo of the aluminum 'shield' that I have around the trunion and post shortly. In concept it should deflect at least some of the heat. More later! Nate
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