The engines should be the same as they all use the same block. On the Eagles we have found that the oil pans are vastly different and that a Spirit Jeep and Eagle oil pan are all different. The Jeep and Spirit ones will not fit in an Eagle. To see the difference go to http://forums.amceaglenest.com/index.php?topic=4800.0 I took pics when swapping a Spirit 258 into my Eagle. The Eagle version of the 258 has a longer pick up arm on the sump and the dipstick is a different length to account for the deeper pan. Just things to watch for. Good luck Wayne superglider@xxxxxxxx, Bolton Landing, NY http://www.superglider.thinkhost.com/ 82 Eagle SX/4 Sport, 88 J10-a real truck 66 Ambo 990 wagon, 69 Ambo DPL 83 Eagle wagon Limited On Sat, 31 Dec 2005 09:41:29 -0600 Todd Tomason <jayscore@xxxxxxxxxxxxx> writes: > My son is taking high school auto tech, and is wanting to rebuild his > first > engine. He's thinking of doing a 258, and then installing it in our > 83 > Spirit. I'm thinking of picking up another 258 for the rebuild, > then > swapping them out when he's done. > > Will any 258 fit in the Spirit? Are the mounting points different > for a Jeep > or an Eagle? > > Thanks, > > Todd > > > > > > >