Trailbeast is right on the money. Contact one of the manufacturers and give them all the information on your setup and see what they recommend. You're not sure I see on what axle ratio you are going finally going to use and if you change it, it will effect the converters performance . Be HONEST with your information or you'll probably get a wrong converter. I've seen too many guys not be upfront when ordering a converter and end up disappointed. Abodyjoe has also given you some sound advise by saying go right to the source instead of someone who sells but does not make converters.