Got an aftermarket exhaust (HKS Rep) and I'm having some trouble fitting my nismo style diffuser with the tips. As of right now it sits flush with the bumper just barely 1mm from the stock diffuser. I realize I can take it to a shop and have them fit it in for me but I'm more of a DIY'er and prefer not to bend the hangers incase I want to sell my car and put the stock back on.
I found these hangers on amazon and I was thinking of trying them out but I can't find the G35 coupe exhaust hanger hole dimensions.

Heres the link