You have to lift the front end,and with both hands on either side of the wheel,shift the wheel side to side. if you feel and clunking its the tie rod. or remove the wheel and cup your hand over the outer tie rod while a friend pulls the rotor side to side.if the tie rod is faulty you will feel the "loosness" in your hand.to check the inner tie rod,give the outer a few good whacks with a BFH after removing the cotter pin and nut. after separating the tie rod from the knuckle,push and pull firmly on the tie rod assembly with both hands,if you feel a cluncking,its the inner.there are no upgrades for the Riv.only whats commonly available.Moog parts have allways done me right.besides,inner and outer tie rods are cheap.if ya got the time and $ I say just go ahead and replace em along with the ball joints.the ball joints are another can of worms in that,they are riveted to the control arm. the rivets have to be impacted out and and the new bolted in place. its all in good fun so just go for it...hope this helps