Case material vs. DNA 75 performance

[cobalt327]

The mod case would be used as a ground path. Assuming identical mods other than cast vs. milled (assume 'milled' means billet), both having proper connections, correct gauge wire etc. and all else being equal between the two examples, is there any validity to:

If you have two DNA 75 mods, one made of cast aluminum and the other of milled aluminum I can promise you the milled aluminum mod will perform better than the cast mod.

[Spector NS5 RD]

i can see if it was a poor casting and it was the ole china zinc/aluminum alloy then there might be a slight difference in resistance reading. what really counts is what you stated @cobalt327, proper sized wire and good connections/grounds. i don't own dna mods that use the board to body ground method, so can not really confirm.