which exhaust will work

[TalonBurner05]

im keeping my stock pipes for now and i was wondering if i should get the 60mm or 80mm muffler inlet im thinkin the 80 is too big but is there a way to make it work or do i have to get the 60mm inlet pipe ? sorry if this is a stupid question i just cant get a good ansswwer from anyhone

 

[97eclipseRS]

60mm because im pretty sure that is around 2.5" which is ideal for non turbo where 80mm is around 3" which is ideal for turbo