How’s it going I’ve never used a forum before but I have an issue going on with my 1967 mustang, it has a 351w in it and I’ve had issues with it shutting off while under acceleration. I’ll stumble and seems to lose electrical power. I had a 750 Holley on it when this issue started, I already had purchased a Holley sniper EFI kit for it, I thought it was the fuel pressure dropping with my old pump for the carb but after installing the EFI system it still does the same issue. Can it be the kill switch or starter solenoid? Or what else can it be? Thank you for any help I can get.