Buick 350. Don't know the history, honestly got it with a bunch of older parts. It was opened up for me, and it's rough, needs two sleeves if I remember correctly. I have nothing to lie about, if you want a 350 Buick, it should be rebuildable, but I don't have a car for it. I don't have the money to build it just to sit, and I am out of room to store it. If you want it, come and get it.