The HKS kit is very nice witha huge core. Here is the part number you will need for the CA18 kit. (note I assume you have a CA in an S13 body, if not disregard this number.1301-RN085, this is for the S-type with the 65mm-thick core1301-RN083, this is for the R-type with the 103mm-thick core
Now if you have the S14 body style you will have to get creative because there is no kit for a CA in an S14, you will have to order the SR kit for the S14 and modify the piping.1301-RN109, S-type13001-AN003, R-type
You will have to go to an HKS dealer and have them special order the kit. If HKS still has some in stock any dealer worth a crap should be able to get it for you. I see you are in Florida, here are all the dealers I could find for HKS in Florida.Dynamic Turbo Inc. Authorized Dealer10500 NW 37th TerraceMiami, FL 33178(305) 593-6160 Phonehttp://www.dynamicturbo.comMurray's Speed & Custom Warehouse Authorized Dealer15781 N W 7th AvenueMiami, FL 33169(800) 524-9201 Phonehttp://
www.murrayauto.comRacing Zone Auto House-Orlando Authorized Dealer7213 Sandscove Court Unit #11Winter Park, FL 32792(407) 273-0099 Phonehttp://
www.racingzoneautohouse.comRacing Zone Auto House-Tampa Authorized Dealer3602 W Cypress StTampa, FL 33607(813) 873-2235 Phonehttp://
www.racingzoneautohouse.comSouth Florida Performance LLC Authorized Dealer18728 SW 107th AveMiami, FL 33157(305) 233-8520 Phonehttp://
www.sfp.net HKS Driving Performance