Gen 1 - Hi Flo Cats

[BC Viper]

Curious if anyone would know the inlet and outlet sizes of the stock Cats on a 1995 Gen 1 Viper? Thanks in advance!!

 

[rpm9000]

I think they are 2 1/2 inches.

 

[costanZo]

Not sure if this is correct, but I read the following:

Factory resonator at the rear of the sills is 2.5" inlet, and 2.25" outlet.