Its possible to mod anything to how you want it, the question is can you mod it. We cant tell you that.
I would be looking at G1/4" male-male adapters to connect the pump to the res, depending where and how the assembly is mounted you might need a bracket or something to hold up the pump, as it hanging by a fitting doesnt sound like a good idea.
Thanks for your reply. Yeah the flow probably would be pretty bad modded like that....
I have decided to go with a stand alone pump for now with the res seperate until FrozenQpcMods makes the D5 tops.