I need to replace my catalytic converters in my 2000 LS1 (Driver side it rattling). It looks like the High flow Flowmasters and the High flow Magnaflow cost almost the same. Both are high flow 49 state legal stainless steal.

Then there is this but I don't think I am up for a large project, but this would be nice.
http://www.ebay.com/itm/OBX-LT-Exhau...13f3d0&vxp=mtr

 

That's a deal for all stainless. I'd kinda look at it this, you know eventually it'll get long tubes.

 

Heck of a price for all shown in the picture.

 

y pipe is too small.

 

SLP's "street legal" Y pipe is listed at 2.5" also

1998 2002 Chevrolet Camaro LS1 SLP Larger Diameter Y Pipe SLP 31035 | eBay

 

thats for stock exhaust. dont make sense to go from 3 inch to 2 1/2

 

you could just replace the cats an headers use evrything else ,for now ,if everything else is good,found show the same kit but does not say with cats ,the same kit $515.00 same seller,i guess thats not bad as the cats cost alot there was anothewr kit from another seller for 630.00 ,do they call then resinaters,trying to help find a better way ,allways want to save time an money