I've heard a lot of bad things about the engine in the last few days of doing research... But then again I've heard a lot of good things, I trust the opinions of the marlin forum population more then a few Google search results how ever... I've looked into finding one built but two problems with that... Most want upwards of $8k or better I'm not trying to spend that kinda cash up front the other is where's the fun in that?? I like to do my own work lol