That sounds fantastic. Well done.

 

Very very nice, I also have an extreme and want duals, thanks for the idea on how to get it done.

 

I have the same tail lights & YES the tabs are SH*#! Just tightening up the top screws broke both tabs. Thank God the lights have that bolt going through in behind the light housing to keep it from flopping around.
I have reg bulbs & LED reverse lights ALA Jonathan (Streblo) & mine have been ok so far - knock on wood.
Tips look great, welding looks uhhhh bubbly lol (sorry man, been a welder for 17 years). It's a bit louder than I like & I have a single in/dual out straight through muffler with the pre cat removed & it's loud but not too loud.
Funny thing is when I rev & let go of the throttle fast like you did in the vid, my blazer drops below 600rpm & stutters too lol
Very nice job especially for a freebie & now DUALS!!!

 

I know not my best work, but laying on my back twisted around and using my cheap harborfreight welder will do that.
Its hard to beleive that im ASE/I car certified to weld on structural parts to cars lol. Real soon I want to spend some cash ad get a real nice miller wender but for now this one works.