My first 360 swap I did years ago, (came out of a Cherokee with automatic) had a slight vibration from idle on up into the rpm range. One of the old guy's at the time that worked at the jeep dealership told me it was because the dampner was for a automatic transmission. We went to the parts department and they listed one for each transmission. So I ordered one for a manual tranny and it curred my vibrations. The one I took off and the new were visibly different.
I just looked online and can't find one listed specifically for a certain tranny. Just going by past experience.
Measure with a Micrometer
Cutter with an ax
Beat it to fit
Paint it to match
My NP435 install [url]http://www.jeepforum.com/forum/f8/time-tranny-swap-upgrading-np435-1487201/[/url]