93-95 Lightning blocks 4 or 2 bolt main?????

[WhiteSVT]

i need some help guys, im looking at a 88 stang and it has a 351w out of a lightning, i need to know if they are 4 bolt main or a 2 bolt. thanks guys.:coolman: :shrug:

 

[99BOSS]

They're 2 bolt mains. I believe it was technically a marine block. I remember reading that somewhere in all my archives when I bought my 93L new.