4t80-E Seville sts 2000
 

has there been any changes to the hydromatic 4t80-E transmission since 95-2000? If none.. could a trans from a 95 sts work in a 2000 sts? also the final drive ratio on an sts and sls are different... would putting a sls trans in an sts mess anything up, and is there any website that eplains the causes of incorrect gear ratio codes?