I have a 97 Ford E350 Super Duty, Econline, Club Wagon.  Which is
modified with a box and lift-gate on the back.  One of the exhaust
valves is bad and I have 1.5 years before another smog test is due and
I won't be able to drive it unless I fix it or sell it.  So one thought
crossed my mind which I don't think will work out but I thought I would
ask the more experienced ford people out there.
Can a diesel engine be swapped into this vehicle without too much
hassle?  Will one mount up to the transmission that I have or do I have
to change that also.  How many things would have to be changed and
would the more rational people out there ever attempt to do something
like this?

Thanks
Russ