Try this one......
Edelbrock 72280 Nitrous Microswitch And Bracket Kit
http://www.ebay.com/itm/160934066489...84.m1423.l2649
Nice thing is it mounts on rear passenger side of carb, less clutter on throttle rod side, still will have room for the overpriced Edlebrock A/C kicker solenoid
..lol
I am using the 72280 to replace a butched up mounted factory kickdown switch on a customers 67 c-10 he installed an edlebrock performer manifold and actual real Carter AFB carb with factory turbo 400......
It is a micro switch, I really dont think it will handle the amp draw of the KD solenoid, I recommend a Bosch 30 amp relay wired in and use the micro switch as a ground for the relay to turn it on and off...
The factory Kick down switch is a pretty heavy duty piece, hence no relay.....