I've had a 2004 SRT-10 since new but have pretty much left it in the garage stock. I'm pulling it out with about 12,000 miles on it and want to start modifying it. I want to start with a full exhaust from headers back. I probably won't modify the engine much (ie: no internal engine mods or super charger) so what would be the BEST complete system or package, irrelevant of price, that i could purchase?