[updated:LAST EDITED ON Sep-14-04 AT 01:19 PM (CST)]The hood will mount the same.
For the floor, save the trans cover and the front mounting flange for the cover from the old cab. The flange is spot welded to the firewall in a semi-circle. Just cut out the three speed trans hump, from the bottom on the left, right and rear sides and from the top on the front edge. ( trimming to get it right in the front will be necessary) If you sit the big hump trans cover in the three speed cab you will easily see why you need that front mounting flange. With the trans cover and front mounting flange the floor pans will work when swapping the cab onto your 4wd.
DVal