hybrid CAI....

I was wondering what u all would reccomend for CAI's for my H22 swap in my 98 Civic hatchback. I was intially going to make my own with 3" piping from JC Whitney and buy all the other rubber pieces and stuff seperate. I was on EBAY last night and stumbled on brand new CAI intakes for 30 dollars for Preludes or for Civics. These intakes are fully complete with filters, and rubber pieces and everything. My question is it almost seems cost efficient to get a premade intake and slap a nice AEM V2 filter on it. Cuz as everyone knows most of the power is from the filter cone. Also which EBAY CAI should I get? Obviously I would have to modify any CAI that I get to fit in my car; but should I choose the one for the D16 Civic, or should I choose the H22 Prelude one. I really wanted the 3" pipping from the Prelude one cuz it would make a bit more power than the smaller D16 piped intake, but just looking at the Prelude one I dont know if I can modify it to fit in the Civic. What do u all think?

Thanks.