What? 'Nother 360 magnum on the dyno?

How do you think this combo will work with the stock injection?

I have a 97 B2500 van that I pull my Duster with on an open trailer.I would like to get some more torque out of it. The engine is stock with the exception of the M-1 TB intake and a set of rare carb legal MP b-van shorty headers.