hey mike i am in the process of having a local shop (turbochargers.com) rebuild a stock craigslist lly turbo so i can swap it with the factory one that is pretty chewed up. i noticed the compressor wheel was shredded when i did my head gaskets but i didnt want to just throw a craigslist turbo on there. i asked the shop about a batmo wheel when i dropped off the and they spoke highly of them and even had one for a 6.0 turbo they were rebuilding. they did say however that for the same $400 they could machine the housing and put a 68mm or 72mm wheel. i just was wondering if i could run a 72mm on stock trans tuning? Thanks for any input and sorry for the noob questions