All of the intakes and exhausts in the world won't make a CRX fast.You have two options - B series engine swap out of an Integra (check out hmotorsonline.com) or boost. There are quite a few turbo kits on eBay for CRXs. The Greddy kits are nice and easy to install (if you can find one) and run anywhere from $1500 to $1800. I'd say if you can find one for $1500 that'd be the cheapest thing you can do to make the car fast. The Greddy kits come with a ECU add-on module which runs a safe tune for a small amount of boost. Anything past that and you're going to have to pay someone to tune the car using something like Turboedit (for OBD0) or Crome (if you convert it to OBD1).The eBay no-name brand turbo kits (like SS Auto Chrome, Race, Drag, F1, etc.) are all junk, and incomplete. Stay away from them.Beyond that you can run a stock B-series engine. The "LS" (non-VTEC) engines are an option. B18Bs are pretty strong. Stay away from the B18A engines, as the rods are weak. The VTEC B-series engines are all good options, although the 1.8L variants are what you'll want because of the torque. B16A's are weak on the bottom end with only 111 ft lbs of tq, which isn't much more than you have now.