I guess another 3.0 motor from any Ford Ranger? I don't know I'm not very smart with cars, I'm trying to learn though

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94 Ford Ranger 3.0, 6 cyc/ Real Story: Last Week My Gf left the house & i thought to myself well i guess i can get some hand wanking action in. LOL i do it sometimes because i get really bored lol well i got to it and BOOM she walks in on me. her face was like ... (O.O) i looked at her & she looks at me, then she walks away. I laughed my ass off & we never spoke about it since last week LMFAO