a 700r4 will fit under there just fine layed out, the 5 speed wont. on the 5 speed the slave cylinder hangs down way too low from the bellhousing. this is a problem even on an s10. it holds the s10 up almost 2 inches. for the auto you just have to knock the floor in in a couple of places mainly in the center of the tranny tunnel at and right behind the firewall and also on the passenger side floorboard where that round cover comes out the side the tranny.