thought about a mastergrade rear diffusor but im not Sure if it will fit my topspeed n1 exhaust. Someone has this Combo ? Thanks alex

 

Dont worry about it, just cut the back lip of the diffuser to fit with a dremmel. I have an Injen true dual and had to cut on both sides but it was easy and you can not see anything it is sooo far back. The front perfectly alignes with the stock exhaust holes and will fit anythign on the front where it shows.

 

Pics please

 

https://my350z.com/forum/exterior-an...ment-list.html

 

Looks like a simple cut out