I broke a header bolt a while ago when I installed my X Pipe and I sealed it up with a C Clamp but recently the clamp fell off and it's about time to get headers. I want to do long-tubes but I don't feel like changing my X Pipe so I'll just get another kind. Should I get shorties or unequal length. What is the difference and will one add more HP than either one. Also what kind of gains can I see from headers with my mods? Thanks.