I'm trying to figure out how much room I'll need to wheel the trans out on the jack. I measured from the floor to the cradle of the trans jack at it's lowest lift point and it was roughy 8 inches. With the trans being 15 inches and adding a few inches to play it safe, looks like I will need to get the rails roughly 25 inches off the ground. Should have bought one of those Arcan high lift jacks....my floor jack is coming up more than a few inches short. If I can't get it high enough I'll just have to slide the trans off the jack onto a drip pan.