Evan,
Thanks for the quick reply. In this post on this forum: http://www.stovebolt.com/bboard/cgi-bin//ultimatebb.cgi?ubb=get_topic;f=2;t=010632#000002
the following statement was made "the V8 mount kit you found is the standard thing to put in a 350, and all the suppliers have'em, so shop around - it's a crossmember that is bolted/welded in the frame rails where the 350 side mounts locate"
So I was led to believe that a crossmember is needed. I know the V-8 was offered, so I too am suspicious already, and hence seeking the wisdom of this forum.
Is the difference between a 350 (later SBC V-8) and a 283/327 (early V-8s)?? Could the 283 these guys put in it be a late-model motor? I am not a Chevy small block expert, obviously, but I would think a 283 would be an older motor.
Thanks for the pointers on potential rust areas.
R-Bo