AFAIK it's nearly identical to a 5.0 shortblock, the heads/cam/intakes
were the difference. I think the pistons were even just hypereutectic.
I don't even believe the casting #'s were any different, you might
check on a board that covers Cobra engines.
In other words, I think it's the same shortblock as any 95 5.0 would have.
I tried to get a 94-95 5.0 Cobra to play with me on the Interstate with me one day, I would pull beside him rock back and forth, rev my engine, and he acted like I was invisible, either he knew I had him, or he was just not interested, I figured he knew he was no match for a 99+ GT. Another thing, they say that a 4.6 is an easier swap into a post 95 V6.