Hey, I'm having trouble diagnosing a problem. I have a 1991 foxbody mustang with a 351 swap (1979 LTD), and a c4 (76 mustang 2). My dad and I just replaced the flexplate (now 157 tooth), the bellhousing, and the torque converter (2500 stall). When we put the drive shaft on it wouldn't spin when we turned the tires. Also when we tried to turn it on, the engine wouldn't turn past a certain point in rotation. When turning the engine by hand, it has no problem turning counterclockwise, but will lock up at a point in clockwise rotation. Please help. We think it might be the torque converter loose.