Muffler Question

[4RunnerFanatic]

im thinking of dropping my stock muffler and putting in an aftermarket muffler like a flowmaster or similar, i just need to make sure that the stock one is center in and offset out, that is what it seemed to be when i looked at it and i need to know what the diameter of the pipe was. Thank you for your help.

 

[4rnr4me]

yes and the piping is 2.25 so you need inlets and outlets of size 2.5" to go over the others...