Having read numerous archive posts about failed MSD units due to heat, I chose to mount my AL6 and tach adapter in the front trunk on the firewall directly behind the battery. It's a little bit more work to run the cables through the rockers but nothing excessive.
So far so good, but if I were doing it again (which it seems likely I will have to at some point if everyone eles experience is anything to go by) I'd probably go for a Mallory unit, apparently they guarantee them for life and fix 'em for free if they do go wrong.
Julian
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