I was shifting an 833 when most of you guys were still messing in your diapers so I have been thru a few trannies. I have never had a Passon OD but I have driven an OEM OD and never had a problem with the spread of the gears per say.I drove a Kessler in my buds car and can tell you it shifted about as good as my 93 1 ton with an NV 4500. After all the excuses as to why it won't shift and all the fixes to make it shift, the Kessler cost about $6000 and several months to repair. I have not driven the "fixed" version as of yet but I will let you know how it holds up to a 6500 power shift shortly.