 Headers & Grind going into forth gear,2001 Cobra Mustang
Hey I just have to last things before I get my 2001 Cobra in the condition I want it in. It currently doesn't have any headers I think. It has a X-Pipe 3" exhaust, do my headers have to match this or can I buy any headers that fit? Any recommendations or websites for the matching headers?
Also, when I shift into forth gear, if I don't do it really slowly I get a really loud grind. What is this most likely caused by and how much will it be to fix?
Does anyone know where I can get a pre-painted spoiler? The car is like a gunmetal gold. | 
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