Done this a few times and it is not too bad if the motor is out of the van.
In the van, forget about it, just drop the motor and save yourself alot of
back aches and cursing.
I would look at your local Home Depot as they have a nice selection of
different large hose clamps.

Hope this helps,
Ken Wilford
http://www.vanagain.com
John 3:16
Phone: (856)-765-1583
Shop:   (856)-327-0027
Fax:     (856)-327-2242