your bay is clean. good work.
your wiring looks good. i approve
cooling panel needs work to be an effective duct. it leaves a lot of open space/gaps.
your coilpack ground making a large difference is quite simply due to bad grounding of your engine block to the chassis. ground your engine better and youd have NO issues
do not feel bad. many MANY people are not 100% thorough on their swaps, and overlook the basics.
recipe for success: reground, and win.
also, ditch that stupid 2 piece driveshaft. get a one piece. win.