Recommendation for transmission. on 2004 Chevrolet Silverado 2500 HD

Opinion on best transmission for towing a fifth wheel, in the 04 2500HD 2X. Thank you.

1 answer
The existing trans in good shape should handle fine if you have taken care of it over time, the trailer is not too large for the towing capacity of the truck. If you want the best then you need to change trucks to the big block or diesel and get the Allison trans.