i had a mopar cheap $200 converter and ran it for a few years -
I swapped to a dynamic 9.5" and what a night and day difference it made in the car - drove much better on the street - even at 3800 stall with 3.23's!!! compared to the 2500 stall of the mopar one
It lowered my cruise rpm about 300 rpm - it gave me more mpg and had a better et & 60 ft
It was the best money I spent on my car at the time
you definately get what you pay for in converters - but you know what? I paid $200 more then I should have!