2.5in hood with Trick flow Box-r?

thanks, i think that depends bynum, from what i heard, a huge reserve(box) and very short runners get you that high RPM power i'm looking for. I have a head/cam designed for a range of 3000-8000rpm. that's why i wasn't really looking for a spacer because it would elongate the runners. correct me if i'm wrong anybody i'd appreciate it- i'm no master tech:shrug: