Okay so my intense ?....its said to be that the 2.2 can probably hand the 75 shot safley but thats it!. What happens if mods are added such as throttle bodie or intake or cams should that result in using a lesser shot due to more stress on the engine?

 

unless you're going for a stage2 cam+ tune, you'll be fine with a 75 shot. a larger intake manifold or TB is not a power adder, you're just free'ing up power that's already there, therefore not putting more stress on the engine.
if you're worried go with a 50 or 60 shot