Anything special about a 91 318?

Few 318 that had true flat top pistons. RRR pointed this out years ago to me looking for some flat tops. Thought they would bump the ol 68's compression but I sold it shortly after.
Every 318 I have ever been into has had flat top Pistons unlike any 360 I have ever been into which are all dished (at least in stock form) can't say I like how far in the hole they are at TDC some years, though.

Truck has been here, stripped and gone.
I did keep the heads (they are 714 casting number with rotators on the exhaust side)
The motor started easy, ran good but smoked like a freight train. The heads did have those overheat plugs glued on reman's, for warranty purposes.
I also kept the (full) gas tank, (new) battery and radiator, starter, alternator, and a few things on the inside I need for my 96 like the heater controls.
And I did keep the supposed impossible to find, 1 year only serpentine belt tensioner.

Supposedly it had a reman engine put in about 10-12 years ago and it has been a sore spot with the PO's as I guess the reason why they sent it for a new engine was that the original one smoked and this one was "no better", and supposedly the people who put it in wouldn't make it right.
And supposedly they got rid of it because it had a bad fuel pump and they didn't want to put the money into it, it was quite rusty and really debatable whether it would have deserved a new one. But with 30 sec on the battery charger here, it fired right up every time I tried it, before pulling it apart.
I work with the guy who had done their mechanical work for the past handful of years/ and I saw lots of cobble work on it as I pulled it apart.
I don't know how much of it May have been his doing/ or whether it happened before he got involved but wow.
The PO was in his mid 80s and "retired" from side work mowing all over town. So he didn't need it anymore anyway.