Walker Quiet flow mufflers ?

I was looking at Summit SUM-680144 header-back kit. All the listing has is "single inlet/single outlet - Turbo"

My question:
"I'm looking at Sum-680144 exhaust system for my B'cuda. I would like to know the brand and specs for the mufflers. Also, wanted to verify that the system will fit the 68 Barracuda. Thanks - Jim"

Their answer:
"The muffler is a standard turbo style muffler. Manufacturer is not listed.

AC"

They really put out a lot of effort for that answer!

I looked at the Summit listing for the Imco T901 - 1.75" inlet/outlet 18.50" OAL??