glasspacks

Hi Guys, I am changing up my exhaust from the stock muffler with dual 2-1/4 in inputs to a single output, to one of two ideas I have had. I either want to put two glasspacks leading from each cat (they are only 25 bucks for 26in Thrush's) to a y-pipe and back to my old stock exhaust set...

i need to run a new pipe to pass inspection. so i was going to have a shop run new pipe for 75 bucks for a straight pipe out the stock side. so just like the stock, but without muffler and resonator, and i would cut take the rear cats off b4 i go there... or do yall think i should do that, and...