First off, realize that your code read on the outside of the block is a enginerring revision number and DOES NOT neccesarily represent the production year. The actual production date is in the lifter valley. This is a common mistake that is made.
D0VE-A and the rare (as in... not all are thick webbed) D1VE-AA blocks have thick webs. These are prime candidates for the 4 bolt conversions such as the Blue Thunder splayed 4 bolt main caps.
The block you had/have was commonly placed into the 429 CJ config. Also note that even in the 2-bolt cap config and stock main bolts these blocks can handle everything under 800HP with no issues. There are some running 2-bolts with a good tune that have went past 1,000 HP with no block/main cap issues other than the expected main cap walk and fretting that comes over time at these power levels. Even a 4 bolt may get some amount of this artifact.
I "flexed" my Google-Foo for you and found this guy's nice little pictorial that shows the thick mains vs the thin mains:
http://fordifiedracing.homestead.com/460tech.html
Then scroll to the middle of this linked page and read this.... you are soon to be a 429/460 block GURU!
http://429mustangcougarinfo.50megs.com/components_3.htm
NOTE/CAUTION: THERE HAVE BEEN MULTIPLE CONFIRMED THIN WEB D1VE-6015-AA BLOCKS AS WELL, YOU MUST VERIFY THAT YOU HAVE THE THICK WEB BLOCK BY VISUALLY LOOKING FOR THE MACHINED DOWN WEBBING.