Y'get what you pay for . . Jasper has had to compete with GM, Ford and Chrysler in the "Crate Engine" business . . And with the ability to manufacture engines with the precision now attainable if you have the money and facilities to do so, kind of puts the backyard or small "Rebuild Shop" out of business . .
On the Transmissions, same deal. If you're using a "Mud Pump" for racing, the right converter and transmission, while not cheap, will work trouble free as long as common sense maintenance is performed and the temperatures are kept down . . Y'just have to remember. That 'Glide input shaft, no matter how much it costs, is only good for so many of those 5800 rpm stall starts . .