Thanks for the info and especially MSD 6 Hemi, so the MSD system needs the earlier type of reluctor found on like the 1st 5.7 and 6.1? I was also looking into other engine management scenarios I was told Holley is good. Excuse my ignorance but this is my 1st dive into the modern stuff and I'm learning as I go along. All of you Garret and Dion make great points and glad y'all chimed in I'm not planning boost for now but you never know and since it's apart perhapa why not take advantage of it. It's presently a street driven 10.50 Duster but not a tame animal by no means and was looking into taming it and installing a supercharger be it a H/C style or a Pro Charger would be nicer tamer power.