Well, for one thing, it took two years to get the engine, after the order was made. I asked twice for some paper work, as to what was what with the motor, like all of the parts installed, cam specks, torque specks, cause it's all aluminum ect. It was advertised as a 530 inch, then as a 528, so I don't know what it is. I had to install offset dowels for the bell housing, and almost ruined the block when I had to drill them out. I suspect they were Ford dowels. The hole for the oil pressure sending unit is to big, and I had to install a bushing. There is a lot more. but I don't feel like typing it all out. Now, the block its self is made of good stuff, and COULD be a real winner if it was done right. Any question just contact me, and I can go over it on the phone.