Custom duals to y pipe

Nope & yes...You want to run those 2 x 2" pipes as far back as practical where you can run BOTH pipes into a Reversed mid 90's Chev Caborala (sp) Van Walker Oval Glasspacks turbo remake 1 in 2 out , Like the AUST 1965 Holden l6 "X2" Twin Carb, Split Exh GM 6 & the Later 186S (which merged the tubes shorter in a Y )...
The walker muffler is about $28 has a nonrestrictive core/baffle system & will probably work better & if you want you can run a 2.5" sewer pipe out right to the back, seeing everyone thinks bigger us better,
You heard it here 1st.
Trev
Hey ! Where's my Trolls ??
I ran them back about 4 feet into a y pipe, and helped a bunch I do feel and increase in both torque horsepower and mileage was worth every penny