2000 chevy 3500 model changing engine

I,ve got 2000 3500 model ton truck it got 6.5 diesil needs optical nerve in the injection pump so that means new pump engine has 30,000 miles i want to if i can change it too gas something i know how too work on what all will i have too change too make that work any comments would be gladley welcome.

not happy with 2000 model 6.5 diesil

not happy with 2000 model 6.5 diesil
if you change to gas engine with HEI and a carb the swap should not be to bad.