there are no issues with using a lokar cable, it just needs to be properly adjusted (which, if you install it right and per instructions is real simple)
I believe there is one in the for sale section as we speak, 60 plus shipping
let me ask you this though, how does your shifter look?
stock on the column style or aftermarket ratchet?
if there is a ratchet, you have a chance there is a full manual valve body in there (but if the car shifts on its own, there is NOT)