I'm trying to put my T4 slip-on on my 07 KLX and got a question on the fitting of it. I got a 300 header for it, do I need to use a 300 gasket to go between them and what about the clamp on it since the 300 pipe is bigger to I need to get a new clamp too or could I use a clamp from the hardware store to get me by for now.