For some comparison, the T/A box with its longer Fast Ratio Pitman arm, as well as the C-body longer ilder arm (aka Fast Ratio idler arm... used for steering radius correction L-R), has a ratio of 12.7:1. I absolutely love it... and I also have a smaller steering wheel 11.5" diameter to further quicken the response. This combination makes the steering superb... its not too fast at all in any manner... street, highway, autocross/road course... it's great! In fact, I wish I could make it a little faster... I've tried a yet smaller steering wheel of 10" diameter... too small.. hands get criss-crossed too easily when making fast L-R-L-R slalom manuevers.. but definitely faster steering yet!

I've never yet driven a Mopar with the Borgenson ps box, although they are supposed to be the same as a late model Jeep Grand Cherokee, if I'm correct, and that steering is OK from my personal experience. The thing I like most about that box is the lighter weight.. taken from the front end.

The Bergman coupler is the only way to go.

I can't wait until I start driving my Challenger ... real soon this summer.. with my FF Stage-3 T/A box... most curious about the firmness, etc. Everyone I know who has a Stage-2 box said they should have gone stiffer.. such as Stage-3.... I'll let you all know of my findings.