Ok,
On the engine I have some adapter plates such as these
eBay Motors: LS1 LS6 CONVERSION MOTOR MOUNTS ADAPTER PLATES (item 230188741384 end time Nov-11-07 15:14:01 PST)
Then I have the cups seen here.
http://www.ls1truck.com/forums/ls1-c...445-mount.html
and all that is bolted to the stock style 350 motor mounts.