the guy who sold me it said it was 8.8 posi but the car was a 4 cly i know he was full of crap but how can i find out? and my tranny is probly a 4 cly one i'm building a 351w does this tranny stand a chance with that engine or will i need to get a new one from a 5.0? If I do what do I have to do the swap them?