Another O2 simulator question?
 

Which is my best option? My exhaust will be TOG headers, Magnaflow h/f cat & resonator, and SLP cat back.

http://www.voodooboost.com/performan.../O2_Simulator/

https://www.zzperformance.com/grand_...ts1.php?id=179

http://www.3800performance.com/Merch...ct_Code=O2-SIM

http://cgi.ebay.com/ebaymotors/02-Se...cm dZViewItem

Now, one thing to take into consideration is that my Alero is a 2004 and has a different harness than the electronic simulators which are only for 99-03, and it would require some work to change the connectors. Any and all opinions will be greatly appreciated.

Your best option is none of them. Magnaflow cats won't throw codes. I have one...it's never thrown codes.