Codes don't tell you what parts to replace, they only tell what sensor is reading a problem. A service manual should give you the diagnostic tests to run with particular codes.
Also, the codes will come back after about 100 miles or so because it takes the computer several drive cycles before it registers codes. And, the way most people drive, a few drive cycles could take up to 2 weeks. You can replace the sensors, but they likely aren't the problem. I wish I knew more so I could help you. But, honestly, reading codes and replacing parts is a good way to waste money.
99 Silver SVT with:
lowered-eibach springs, piaa fog lights in upper mesh grill, K&N filter, tinted, flowmaster mufflers, straight-piped cat(temporarily w/ca. for emissions), custom spoiler
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