If that is the original motor, take it out if your driving it!!! You will blow it up again eventually doing 6-7 grand on the tac alot. You got a lead foot man, which is cool, but honestly it will blow up again from the sounds it. Not worth the risk IMO, because if hot rodding the car is what ya like (me too), then get a better/faster motor and drive it like you stole it.
