I have a 07 with the 48re. I would like to upgrade the trans inorder to hold the power of the smarty jr. on the 100hp stadge and a leveling kit with tires no larger than 35s. I heard that if you just upgrade the Torgue Converter and Valve body, that I should be okay. Is this true? Or would you upgrade the input shaft as well? Or anything else? Id like to hear what you guys think. If it is what valve body and torgue converter would you go with? Thank you in advance!