Hey, I know that webpage...
Lol - my ears were burning, so I had to come check out the board.
Excellent timing. I got the 351W and the ZF/D20 combo installed in the Bronco yesterday, and everything fits PERFECTLY. When I was working to mate the 2wd ZF to the D20, I went ahead and clocked the transfer case while I was at it, (and converted it to twin-stick at the same time.) With the ZF just below the floorpan sheetmetal (2" body lift), the bottom of the trans is even with the bottom of the frame rails, and the driver's side front output of the D20 is, also. The top of the case of the D20 sits 1/4" below the "stiffening rib" under the floor, just about where the seats are.
Honestly, everything fits so well it's spooky. What's great about using the 2wd ZF is the price - I found mine on eBay just before Christmas for $168.00! There's one on eBay right now with a Buy it Now of $299. Here's the link:
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=33733&item=2479808580&rd=1
I re-used the stock adapter and crossmember (just a little modified). Total cost of adapters = $0. The twin stick setup was fabricated from the old T-shifter, the original Bronco muffler bracket, some electrical conduit, and two cue balls for knobs. Total cost - $0.
So, for about $300 (mostly for the ZF and shipping) and a little work, I've got a great heavy duty trans with an awesome granny 1st gear, a useful 5th gear overdrive, much better ground clearance, (flat belly pan!) lots more gearing/drive options (front wheel low!), hydraulic clutch (lots more room to run exhaust).....what's not to like?;D
Here's a sneak peek at the article detailing the swap that I'm working on for Bronco Driver:
http://home.austin.rr.com/broncenstein/Budget ZF swap.htm
Lots more pics coming soon.