DO LIKE MICHAEL SAYS FORGET THE USED RAD TRIP, YOU CAN GET A NEW ONE IN A LOT OF CASES FOR ANYWHERE FROM 100-RIGHTNOW 145 ABOUT MAX FOR THE TROOPER , ASK FOR A 2.6 ANY YEAR 88-91 TROOPER WITH AN AUTOMATIC TRANS AND YOU WILL GET THE 2 ROW AND COOLING ON THE 2.3 SHOULD NOT EVER BE A PROB, JERRY