well, im wondering if the rebiult 700r4 will hold up t othe 458hp my motor is putting out. Well there is one other thing a have a soild 515/515 racing cam. i did not have the money to buy the new converter for the 700r4, whats this going to do for me when im racing, is it going to make the car a dog off the line. or is there away to make it go good off the line with the stock converter. I run m/t et streets for rear tires.