The price for the Tremec TKX is currently showing to be $2795. The American Powertrain bellhousing for Tremec to Mopar is listed on Summit Racing listed at around $450. SST sells what they call their lighting edition shifter with over 25 shifter positions. I think the total would come out significantly less than the $6K you would spend for the other transmission that you may or may not get for a very long time. Then there is the question of parts to fix said transmission in the future if something goes wrong or a simple rebuild is necessary.