I stopped at the parts store today and did some research on brake parts. Seems that Isuzu 4x4 pickups in 1989 and up have rear disk brakes. They also don't use a drum inside the rotor for the E brake, they have a caliper that works off a cable to squeeze the rotor. I ordered the calipers and picked up the rotors. The rotors are a little smaller outside dia. but have the same lug pattern. When I see the calipers I will know what they look like. If this works I won't have to put the rotors behind the axle and I will have an E brake!