Two crane 6000-6440 ignition boxes. Built in rev limiters. Very reliable units. Summit sells them for 249.00 each. I was tired of the MSD marine boxes failing, and bought these in 2011. Never had an issue with them. Come with MSD high vibration coils. These are digital CD boxes, that also have the diagnostic LED on the box.

175 per box with coil. Or, 325 for both boxes, both coils.

Attached is pics of the inside of the MSD boxes, and the Crane boxes.

Here's the link for them on summit. Also has the downloadable instuctions there , if you wish to learn more on them.

http://www.summitracing.com/parts/CRN-6000-6440/

Crane has some nice riggers... lol

They are like the cigarette racing team, of igntion boxes, and msd , is well...not going there