electricme

so what is the part number of the 20MM that works? never mind I'm dumb!

Your Best bet is to go to a custom exhaust shop and have them fit you for a custom catback setup... they usually use magnaflow or borla mufflers

There is a wire harness connected to the frame that is running down towards the grey connector I pulled that up out of its hole and was able to access the grey connector. I will take a photo tonight, brought my truck to work today

You dont need to take the white connector out... the grey one is just underneath it moves some stuff around it is very easy... My fat hands did it in 2 minutes.