I am thinking about buying a rs*r GT II catback for my integra but i dont know if it is 2.5" doesnt anyone know the piping size ...my other choice is a turbo apexi N1 with 2.5" piping ...let me know ..this will help me know which to go with ...

 

it's 60mm or 2.3" i love my gt2, it's well constructed, straitht, and now pre-silencer, and does not drone loud like other n1. good exhaust

 

isnt 2.3" a little small or 2.3" and 2.5" to small of a difference ...i just dont want it to be restrictive once im done with my motor and all... what do you think?