Update: Did an ATI super damper, hoping to smooth things out a bit more. Motor is smooth as butter at idle now, still horrific under load.
There's a thread on here where someone else had a similar issue, and came to the conclusion the input shaft bearings on these trans are shit. I think that can be agreed on now.
Solution (I think) is to replace the input shaft bearing and do the mazworx bellhousing. If this doesn't fix it I guess time for a hollinger
