I've got a couple of MSD-6AL boxes (#6420), one is used but 100% functional and cosmetically nice, the other is brand-new in factory packaging (never even opened!).
Summit sells these for $203.95 currently
I'll sell the used one for $100 & the ride
I'll sell the new one for $150 & the ride
Link to image and description ->
http://www.summitracing.com/parts/MSD-6420/
The RPM Module Selector is an add-on to the 6AL box. Instead of buying more RPM "pills" for the various limits you want, you plug this deal into the 2-prong port and set it with a dial (4600RPM to 6800RPM in 200RPM increments)
Summit sells this for $57.95 currently, I'll take $30 & the ride
Link to image and description ->
http://www.summitracing.com/parts/MSD-8671/
I can post up with actual photos of the used stuff if it's a real deal-breaker for anyone.

Summit sells these for $203.95 currently
I'll sell the used one for $100 & the ride
I'll sell the new one for $150 & the ride
Link to image and description ->
http://www.summitracing.com/parts/MSD-6420/
The RPM Module Selector is an add-on to the 6AL box. Instead of buying more RPM "pills" for the various limits you want, you plug this deal into the 2-prong port and set it with a dial (4600RPM to 6800RPM in 200RPM increments)
Summit sells this for $57.95 currently, I'll take $30 & the ride
Link to image and description ->
http://www.summitracing.com/parts/MSD-8671/
I can post up with actual photos of the used stuff if it's a real deal-breaker for anyone.


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