I have an 05 with Dave's Basix trans. It took a couple weeks for him to build it and ship it. There was no fluid mix to my knowledge. I used dex6 when we installed it and an external cooler. That has been a few years ago and the trans is still going strong. The car will die long before the trans ever will. A bonus for me was Dave shipped the trans strapped to a pallet, and the straps were so nice I am using them to hold the ladder portion of my hunting stand.