There shouldnt be any issues really . I believe you`ll need a longer rear driveshaft ( CJ7 is 11 inches longer rearwards than the 5`s ) . There are subtle differences in firewalls between 76 - 86 tubs. For example , if the CJ7 tub is an 83 w/ 4 cyl , then it used a hydraulic clutch , a pre 80 CJ didnt , they used manual linkage . Little issues like that will(may come up ) . Do your research and watch this board but I dont see it as being a problem . IMO
Jeff
Summer is just around the corner /wwwthreads_images/icons/tongue.gif
Jeff

Summer is just around the corner /wwwthreads_images/icons/tongue.gif