i need to order my exhaust this week (SLP 1 5/8" headers, powerflo catback) and i need to figure out what cat to get from summit. they have oodles, and i don't know which one to buy... i need a 3" cat, but they don't have one specific for the f-body (all 2 1/4") and there are three or four 3" cats under the universal section. 12", 14", 16"; could somebody help me out with a part # or tell me which one i need?

much appreciated... i'm really anxious to get this stuff on my car (i'm sure you all understand )

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'88 WS6 Formula - Stock LB9

 

The one I got from Summit was p/n CTO-9118
made by Catco. This is 3" with a slip fit on the in side and 2 bolt flange on the out.
Its listed for the F-body. If you are going
with SLP headers get their 3" slip adapter
to connect the Headers and Cat.

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1987 Black Camaro IROC-Z (original owner) Replaced LB9 @ 86100 miles.
New 350 Crate engine
Balanced & blueprinted
WP 67cc Heads 9.6:1 C.R.
Cam: 450lift,216dur@50,110ls
TPI Induction(from 305)
22# Fuel Injectors
SLP Intake runners
New Computer chip
K&N filters & Air Foil ,
Hothkis STB
SLP 1 3/4 Headers
CATCO 3" Catalytic conv.
SLP 3" Cat Back Exhaust
700R4 Auto
SLP Torque Converter (2400 stall)
Limited Slip rear
245/45/ZR-17 Tires
17x8.5 ATI 5 Razze Wheels
EST. 340HP
380#/ft of Torque
NEW TOY!