Diesel Bombers - 84 chevy pick-up 6.2 to 6.5 help

i have a 1984 3/4ton chevy pick-up 6.2 4 wheel drive 400 turbo trans that i am putting a 6.5 in for school for my engine rebuild class ...... i have a the new redisigned block and heads on there way, the 6.2 injector pump (db2) has been rebuilt and callibrated to push 6.5 marine injectors, and the gm4 turbo is getting rebuilt as well ........... i was wonder if any one else out there has done this swap before and would have some helpful advise as to witch things might need changed or have adapters ect...... im aware that the fuel lines from the db2 to 6.5 injectors are a problem spot but not sure how to remidy that and i was also wondering if my 6.2 vacuum pump would work in the 6.5 as far as the gears being the same. any help would be greatly apriciated thanks