Wait till he finds out how much it is to Build an Allison tranny. 8,000.00 for the top of the line.
Just a word from someone who went through the Diesel Power Craze, Yes a 1,000 dollar chip and programmer have the ability to get u up to 220 extra hp. After that you will have to fork over some serious dough to correct all the issues you will run into.
Just my two cents, I left an 05 Cummins Pushin about 475 hp and 1150f/lbs of torque to get my gas gussler, but Good luck with it.