I really don't see the need for the strap that goes over the top. The 4 bolts at the bottom should suffice. I've never seen a trans case busted in that area on cars without the strap.
I'd also recommend you put some safety lockwire on the clips that hold your throw-out bearing. Tie around the loop of one clip then wrap the wire under the T-O bearing and tie to the other clip. Those clips are notorious for falling out, even the double loop Saab type you have.