WHERE WOULD I FIND THE GEARBOX CODE ??? I THOUGHT IT SHOULD HAVE A 1600 ENGINE BUT THE HOLE IN THE ENGINE COMPARTMENT WERE THE ENGINE GOES IS ALOT LARGER THAN MY SPLITSCREEN VAN WAS.HOW DOES IT ALL GET SEALED ONCE ENGINE IS IN PLACE ? SPLITSCREEN ONE HAD A BOLT IN REAR VALANCE THAT MADE IT A TIGHT FIT ONCE IT WAS ALL IN .