I believe you have to move the mounting brackets back 1" to the next set of holes, same goes for the skip plate they are adjustable. The 304 and the 2>5 use the front holes because they are shorter. The serp belt is a good deal and came on west coast vehicles the only thing that you need to remember is the water pump is different it turns backwards from a Vee belt but identical until you look at the impeller, and the fan is also reversed, there are two ways that the serp belt will fit just make sure you install it correctly. Also the taurus/contour fan is almost a bolt on just trim the corners abit. but you are on the right track.
86 CJ7 5.7 vortec. 4L60,D44's,OBA,Air tank bumpers w/D rings detroits,4.88,35" bfg, mt's 9500ti warn
86 CJ7 2.5 detroits, OBA 4.56, air tank bumpers, w/D rings,9500I warn 31x10.5x15, Trxus
86 CJ7 bone stock, w/factory 44 never seen the dirt soon to be for sale
87 Wrangler also never seen the dirt.