I have two T/A race converters, one is a older(built in the mid 1990s)8 inch SS/AH and the other is a nine inch T/A race hemi for the same car, I have used both in myy Duster and both worked great, much better than my ten inch Contitental street converter. The 8 inch was worth .2 and 2 MPH in the 1/8 mile with no other changes Suprised the heck out of me I drive it on the street and it is great It is really great for a race converter used on the street Some day I may have another custom built converter done for my Duster, but not real soon T/A race converters rock