Star-date 17 June 2020,
Just finished installing my DRD tuned MM3.
I went with the complete package w/ accessories, FLO~PRO Race Pipe, and Shibby plug kit.
I like several others who have posted, want to sincerely thank Ray for his customer service and support.
He delivered as advertised!
Thank you for your patience with me as well kind Sir!!
I thought I would share this tidbit.
I went to Ace Hardware and found a $2.99 plugin the plumbing section.
Drilled a 7/16 hole in the firewall plug and 5/32 hole in the rubber plug for a snug fit around the wiring.
I had to stick a drill bit slightly larger than the white plug end into the 5/32 hole to expand it, held the white plug against the drill bit end, and fed the white end through while pulling out the drill bit.
Then I popped it into the firewall plug.
Good snug watertight fit.
FLO~PRO Race Pipe components