New member from MA

Whats up everyone I'm new around here, I drive a 88 5.0 hatch 5spd and got a few questions about a bad misfire I'm having right now So pretty much I bought this fox 3 months ago and it was running fine. I've done a lot already like new ford racing wires, msd blaster coil, CAI, new cap, rotor, plugs etc.... then about a month ago it started overheating on me bad and the radiator was leaking, so I replaced the water pump/radiator/ 180* thermostat/hoses and new aftermarket temp gauge. The temp is sometimes erratic usually staying around 160*-190* but sometimes jumps to 230* and then back down. Now my big problem is this misfire...it will studder and hesitate really bad on acceleration and then out of nowhere it will snap out of it and it drives fine I don't know whats going on and need help