I Have the stock tuxedo park 4.88 locked axles, the dauntless 225 engine, and a failing t86aa tranny. With this set up I'm able to go about 55 mph. I absolutely love this engine in jeeps so I truly want to keep it and I'd also like to keep those hard to come by axle gear and locker in the rig, not just because its hard to come by but I love the feeling they give while driving it,but I want it to go freeway speeds because I'd like to make it my daily. Since Its needing a new tranny I've been looking into putting an automatic with an overdrive in there. I've really been looking into the th200r4 because it's got a pretty good OD in it, it doesn't require a computer, and it will fit the engine with out an adapter. My question is will I need to get a different flywheel or anything to switch the dauntlessvery less to an automatic? Because I love the low end power the dauntless' heavy flywheel gives so I really don't want to change it. Any help/guidance/knowledge is greatly appreciated!