6.0 with l92 heads and custom grind cam from pat g and a kb racing cam with upgraded turbo. S400 turbo from Borg Warner and 4inch down pipe. Need some advice on a good muffler to get installed and removed all old exhaust and 40 serious muffler and going 4 inch all the way. Magnaflow, borla, ???

 

Diesel mbrp is my choice u can buy their whole cat back for like 380 str8 4inch and 5 inch bad *** tip