Header Before Exaust possible??

Quick question on my 04 Civic is it possible to dump headers (4-2-1 DC ceramic) on the car before (Greddy SP exaust) or should the exaust be done first cause of heat, I cant seem to get a straight annswer. price wise headers I can buy now and not the exaust..-thanks!! :banghead:

yes it is fine to do that my friend did that on his gsr

I've done the same on my civic, and would actually recommend that you proceed in that order, as it is likely that your header is your current bottleneck. There are no heat loads that come anywhere near yield points for the exhaust piping.