Firstly Mike, welcome to the SOC you can do certain things to mod your auto to make it handle more power but I'll get a couple of the guys with big power auto's on here involved with your question. There's not much info on big power auto's but I have an auto and is soon to be nicely modded. The first thing to think about before upping the power is as you've asked, the box. Get an additional transmission cooler fitted and look at getting a shift kit fitted.
As said, welcome aboard mate, always good to have another auto owner on the forum![]()
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