does anyone know if the 617 transmission bolt pattern is the same as the 602 ? what about the output shaft? is it the same size ? is it longer or shorter? are the slines the same? reason im asking is im trying to figure out if i wanna do a gm trans swap!!!!! 4x4 labs is making a production run of adapter plates and flywheels to a gm trans? check out their web site. any info would be greatly appreciated