Greetings all. New jeep owner (read very little mechanical ability) with a couple questions: my jeep is a 91 with a 4.2L engine. I thought 90 was the last year was the last for the 4.2 (i think the VIN decodes to 6cyl). Is this correct and is there any way to tell (without pulling it apart) if it was rebuilt. It also has fuel injection-any idea of the HP and any special considerations for a jeep with FI? Much appreciated.