I have put together a 468 using the eagle 4340 rotating assembly and some modified Patriot freedom heads running a solid roller xtreme energy cam. Plan on running a 200 shot of nitrous with this setup when at the track but otherwise will be a street truck mostly. I'm in need of a upgraded ignition setup so my question is, what would be the kit to buy (best bang for your buck) for upgraded ignition system with rev limiter and timing retard setup? What are my options?