Okay, currently have a stock upfront and a Deka 9a31 in the back. I'm going to get a XS soon and was wondering if I should replace the stock upfront or move the Deka upfront and put the XS where the Deka was (by the amps). Does it matter? Which would give better performance? Last question.... I can't fit a real big battery upfront without mods, if i was to put a G31 is it okay to just run a short length of wire from battery to stock connections? Ex. stock ground & power (starter) won't reach the posts of a G31 so i se a ring terminal and run a short length from battery to stock wires? Yes Big 3 Done long ago.