LocTite #242 or equivalent should be just ducky.
Oh - I'd either look for bolts 1/4" shorter, or stack a couple washers underhead. Remember all those reports of sheared motor mount bolts because they bottom out? Why take chances - especially when insurance against the problem is so cheap...
Oh - and let me know what size the bolts are, if you would. That way, I can add them to my Archive...
5-09