We run that same gasket on a 406 that has an honest 15-1 static CR. Stock block, alum head, with studs. This motor made 702hp. Not sure how happy the dyno was but it runs low 9.40s in a 2850lb nova, shifting at 6400, leaving at 3800. It is injected on alcohol. Watch your tuneup at that hp level using a stock block. Some people get away with running them some don't. We had ours sonic tested to make sure there were no thin spots.
This was a 2bolt block with splayed caps installed.
Curtis