There is no problem with "bling" Mod's, the problem is changing the inlet or outlet diameter.
Increasing diameter, will increase flow, which increases pump load.... it does not decrease pump load as some people think.
Pump chambers in an intergrated pump/motor design, can not be modified without effecting load.
Best I know Bob, C-Systems will not work with Innovatek, and before you ask, I have no idea why. It is unlikely "upper types" will let me know, and if they did I dout I could post it.
Intergrated reserves, UV mods, all good
Just don't change chamber, and you must be careful when designing a reserve to avoid vortex propagation.