Here at Collegedale Exxon in Collegedale, TN We only carry top brands and provide high-quality repairs. One of the brands we highly recommend is Jasper Engines & Transmission. Working with Jasper means we are now able to expand our ability to provide our customers with enhanced quality products like the Chrysler 68RFE transmission which they have expanded and also upgraded. This rear-wheel-drive transmission is now available for 2009 through 2017 Dodge / RAM Diesel engine applications.