You already have most of the kit so why go that route? The aftermarket throttle switch, solenoid and switch retainer are all junk. My advice is to go NOS on the switch and retainer. Find a used Corvette flapper solenoid (same part number but MUCH cheaper). You need a few repro parts after that but not too bad. The wiring would be set up to install as an accessory so it's easy. Even with all that, the setup is finicky. Mine needs to be messed with every so often to stay functional. At least it's all there.
