Custom Cable. Please Help.

Hello There. 
I have left and right 15 feet JPS Labs SuperConductor Q (RCA). I would like to custom to 5 feet. Any good company you guys recommend? Thanks
agree w/erik above....I've had JPS re-terminate some Super V speaker cables for me and they made me a custom PAC lite power cord that would fit my amp.....great company and service - you know it's done right.