Moding your stock Exhaust is very simple and requires some tools.
drill bit 1/4
1-unbolt your stock exhaust
2-facing the exhaust lay it on its left side
3-center punch 3 dents one one the right side top,middle and bottum.
4-drill the 3 spots out
5-bolt the exhaust back on
This will give you better Acceleration and top speed. Now more exhaust can flow through the motor and allow your motor
to breath better.this will do the same as installing like an x-can.Your ped will be a bit louder though.