Im wondering what it would cost for an A4 6.0L minus the tires to handle 800hp and not break. Currently the engine is pretty much bone stock, and I'd like to gradually build the engine to 800hp. Start with things that usually break or are not suited under that load, and then move to major power adding. I dont have a budget laid out, but I was just wondering what the cheapest way to get there is, just so I could see if the budget could be potentially girlfriend friendly. If it's too expensive I probably wont target 800hp so I just wanna know what your guys' experience are.