I scored a 93 Ford school bus w/ 5. 9 cummins and Allison 545 auto, and I was wondering if anyone has had any luck finding anyone to beef up this transmission. I know it is not rated at much hp/tq from the factory but I figured as many as there are out there, some one must make some performance parts for them. I really would like to take the motor to 400-450hp and I just hate to trash this transmission in stock form, since it only has 77,000 miles on it. Any help would be great!!