Check plug wire routing for crossfire. Are they a type of wire recommended by MSD? I would CHECK the wires with an ohmeter for opens or high resistance. "New does not mean good."
Check carefully your pickup wire routing. You want the plug wires to cross that area "at a 90" AKA not run parallel, away from the pickup. route the pickup wires down near the block/ body to help act as a shield. Sometimes you need to shield the pickup wires. There are several ways to do that
You can look for and find short pieces of shielded wire on ebay. You can buy shielding sleeve. You can strip a piece of coax (Go find a 2 way shop or local amateur radio op) Or you can also just use a piece of cat-5. Use one pair for the pickup, and pigtail all the other wires together and ground them. Ground the shield at the CPU end ONLY. Don't ground the distributor end. This is called a Faraday shield.
