Need Advice About Warranty And Aftermarket Parts

[esquire]

Hi,

I need some advice about the Lexus Certified Pre-Owned Warranty and aftermarket parts. I'm looking at adding the parts listed below, but I want to first make sure I do not void the CPO Lexus Warranty.

If anyone has any advice, or personal experience, please respond. Thanks!!

1. XERD stainless steel headers

(http://www.horsepowerfreak.com/XERD_HDRE.asp)

2. Intrax Lowering Springs 1.5'' drop

(http://www.adventon.com/acb/showprod.cfm?&DID=24&CATID=110&ObjectGroup_ID=2677)

3. Upgraded shocks to work with the lowering springs

(http://www.horsepowerfreaks.com/default.asp?brandCd=KYB+subcategorycd=SHOC)

4. Borla Exhaust System

(http://www.suprastore.com/gs400borexsy.html)

5. And maybe an S-AFC 2 tuning module.

(http://shop.store.yahoo.com/titanmotorsports/apsuafcve2fr.html)

Already installed a Swift Racing HFI/ECU intake system for +22 hp. (http://www.suprastore.com/swifracgs300.html)

This is for a 2001 Lexus GS300...

Thanks!

[esquire]

Forgot to mention, this is for a 2001 Lexus GS300. 50,000 miles remaining on CPO Warranty.