After looking again at the model year of the trans I would replace the converter if you plan on using lockup. 2001 was the first year for the good lockup piston - the one you have is the old style and It will fail the lockup disc with the power you are making or if it was towing a lot in the prior vehicle. If you decide to stay with the lockup buy a Mopar Reman converter - they all have the latest design lockup piston, 100% new lockup discs, and balanced to factory specs. Probably the best lockup unit out there without going billet parts.