SEMA - World Products 4.6/5.4 Blocks!!

im assuming its similar to the SHM race block. theres extra metal in places the blocks need it, also the coolant passages and oil galleries are probably different. im also assuming that the horsepower rating is up around 2500hp. theres probably more room to overbore. maybe like on the ford racing windsor blocks, the sleeves are higher to allow for stroker motors without notching.