Questions about the Mopar Performance 340 Replacement Block P5007552AB

Anything complicated... They've been producing crap for castings for years. Nevermind the ECUs and camshafts. Porous W5s, Stage heads with machine work done by monkeys, big blocks & Hemi blocks that can't go beyond factory bore because they're so thin. Same monkeys doing the block machining. Do some research. You can find issues galore. I've personally had to deal with thin blocks and W5s that needed a ton of work and sealing to get usable. It's unfortunate but you really need to be careful when buying and it's besst IMO to buy from someone like Shady Dell who has intimate knowledge of the quirks and knows how to make sure what you have will work for you.