https://m.summitracing.com/parts/msd-8381 I have 75 miles on this which was to work and back. I blew a piston apart the next morning at start up and am installing a crate engine that takes the opti 2 due to the cam change.would like $350 but am open to offers.I won't be able to get the part out of my car in back seat untill 2/24/17.I will say it worked flawlessly untill I had the engine let go.this is the exact part in the pic and where it came from.thanks