s2k's are nice, but i dunno if i'd give them as much respect as people who own one think they deserve. i know 2 guys who drive them and have dropped over $8,000 into them and those things haul some ass. but for stock? no thanks. even though they are bred for racing, i wouldn't take a stock one
A V-AFC, cat back converting to single exhaust tips. (keep the stock header as they lose torque if you put an aftermarket one on) intake / filter and they will run a 13.7.
You can get the early 2000's for 12Kish if you import them.