Hey,
Ive got a Brand New MSD DIS4 "High Output" (H/O) Ignition Unit, i had orginally purchased this for my rb26/30 package, but have recently bought the new autronic computer and cdi unit, so the msd is no longer needed.
Can be used on any twin cam setup.....
There are 2 dis4 units on the market, standard and h/o.
Here is the link to msd website
http://www.msdignition.com/sci_4.htm
$600.00 firm.....they still retail for around the $700 mark.
Brand new in the box, never used.
Thanks,
Steve