I have one 3.3ft Fosgate Matrix RCA for sure and need to check if I have another. I also have a 1.3ft and 6.6ft Fosgate Matrix RCA's if one of those will work. I would do any of those two for $15 shipped.
Ironic but its Walmart.......orange......I would recomen buying your own speaker wire you wont save much buying it from somone else rather than buying it new. As for the RCA somthing that short isnt going to cost much either,