Catalytic Converters (2001 or 2002)

[Vipermann1]

I am looking to trade my 1999 Viper Rt/10 for a 2001 or 2002.
1 - What are the differences between 2001 and 2002? more power?
I known it's the same body style. (2003 is the new body style)

What is a good after market catalytic convert to use for everyday use and street driving, but that also has low heet and can give me some HP.
How will the converter effect my warrently if it is a new car?

Thanks - UZY

 

[Bill/APEX Motorsports]

I agree with JonB. I'd recommend doing headers (we use Belanger) and maybe a cat-back (we use Corsa (for a few more hp)) before replacing the cats. Only higher-hp and higher mileage cars will benefit enough from high-flow cats to warrant the cost. And high-flow cats will be louder as well.
We do sell the high-flow cats, and they typically make around 10hp at the rear wheels after we've already done headers and a cat-back.