Stock down pipe diameter ? 2000 6.5

[bullboybob]

Hello Guys , what size is the OEM downpipe and aslo what size is the rest of the sytem on a 2000 3500 6.5 Dually ?

[joed]

I think the stock 6.5 downpipe is 3" diameter with the rest of the system 2-3/4".

Joe.

[bullboybob]

thanks man appreciate it.

[DennisG01]

Don't forget about the crossover - it is smaller - I *think* it's right around 2".