The 86 is a unique piece. So, even though it has Forged pistons, they are flat top and have no valve reliefs. So, you won't be able to use the "p" heads from the explorer unless you do some piston notching for PTV clearance. The upper and lower intake will work. Be advised too, that the Schrader valve on the 86 sits next to the FPR. So, if you plan on putting an AFPR and gauge on it, you would be better off taking the fuel rails too. That way you have some options when it comes to doing the AFPR/FP Gauge. Ask me how I know.....