Possible engine swap for a Zuk and/or buggy

[Polie]

What about using a Cummins four cylinder 3.9 liter? The 3.9L four-cylinder weighs in at about 800 pounds, and is 30x23x31 inches. (stolen info lol) and then mated to a Chevy TH-400?

Heres something to go by:

contacted Cummins for more information on the 4BT and was told that many commercial customers and independent shops have used this Cummins engine. The 4BT 3.9 engine is rated at 120+ hp @ 2500 rpm with peak torque of 327 lb-ft @ 1700 rpm. The engine weighs 570 pounds (dry). The 4BT 3.9 engine dimensions are...:
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Total height:   30.6 inches
Total length:   30.1 inches
Total width:    22.9 inches

How does that compare with the stock GM 4.3 V6? It has 190 HP and 250 pounds of torque. It's dry weight is 492 pounds.

Total height:   26.7 inches
Total length:   26.0 inches
Total width:    22.0 inches

http://www.overlandvans.com/0104_diesel.html

Adapters:

http://www.transmissioncenter.org/cummins_4bt_and_6bt_adapter.htm

I'm thinking it would be a grrreat swap

[4wheeler]

The VW is about 250lbs.
Compared to the 800lbs, seems kinda crazy..