As Eric says, there are at least half a dozen different covers and all of them will bolt to your block. Here's a site to look at pics of a lot of the later ones.....
http://www.bishopengine.com/pages/ma...pe=Ford_Covers
Another feature to consider in your selection is.....front sump pan or rear sump pan? (the dipstick is in a different location)
HTH, Ed