i took all 4 seats out of a 91 4runner and the 2 front seats bolted up just fine but the back... they but and all but the bolts for the bottom section didnt line up... so i just put the stock bolts back in the holes and drilled new holes and they work great. the upper part of the back bolted up just fine but the locking mech. that keeps them upright isnt in the right spot, seeing as how i live in idaho i rednecked it and got a bunji ball and bunjied the pull tab to the loop on the back... if that makes sence...?