Hi guys, I have a 91 4x4 ext cab 4 cyl 5 spd and have a chance to buy a 92 same trk with 6 cyl. Man says the truck runs good but has a bad coil and no spark so naturally I cant hear it run. Question is , Will the 4 cyl coil work to test the 6 cyl. Also if the clutch saftey switch was bad, would it kill spark at the coil. The the man is asking only $500 but I dont need another dead horse sitting around. Thanks for and advice.