Well if ya count his first bone stock engine, ah yeah.... But we must toss a 4th one in there for the broken crank. That 32 Sonic has killed more Duramax engines quicker than any pulling truck I know of. 12k lbs of boat + 6spd Allison + ASD8 drive is obviously a combination to avoid.
The center engine is the second PPE version to die a watery death. Two end units are just a couple FB swap shop cores he picked up in CA. That PPE block has about 8hrs on it, and scratched a cylinder wall when a piston let go. So I pulled the heads off the far pictured long block, it's headed off to the machine shop to get punched out.
Dave said screw it and tossed a pair of 350 outboards on her. At least if he blows one of those, now he still has one extra to get home on. His little 50hp outboard just wasn't cutting it as an emergency spare.