Naveen, Just get some conrail blue paint and paint the Atlas bearings. I'm most interested to see how the Kadee Trucks work for this conversion.
My conversion years ago on the non-shield version of the Lionel 30K tank car.
https://ogrforum.ogaugerr.com/...-converted-to-2-rail
Watching Kadee's site as they now have a category for their O Scale trucks but no items
O Scale Trucks and Wheels - Trucks and Wheels - Shop by Category (kadee.com)