Ok, So i have gone ahead and made a few upgrades and now my car stalls and is undriveable. I have installed a plog, 3"dp, autolite 104s and a 180*thermostat.

Why would it stall? could there be a problem with the DP or the plog or is it more likely because i have the colder spark plugs? I also just got my Overkill PCM today, will that help the problem or is there a bigger issue at work? Thanks for your help.