Which sfc will fit my car with my headers, without modifying the exhaust?

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'91 Z28 305, Auto trans, K&N filters, TPIS air foil, power pulleys, ported plenum, hypertech chip, hooker cat back, kyb shocks, STB, SLP 1 5/8" headers, catco 3" cat, 14.7@ 93 mph.

 

I've got Alston's, but I have a custom Y-pipe, with my SLP headers.

http://24.1.139.249/images/101400/DCP_0018.JPG
http://24.1.139.249/images/101400/DCP_0020.JPG


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1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.23 @ 107.62 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

 

Do you have the dual cats or single? Ive got slp dual cat and spohn sfc's. They fit fine. Doug

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Central Indiana Camaro Club member since Oct. 2000
1991 Z28 - 51,000 miles.
Dyno Results: 226.4 Max Hp; 310.4 Max Torque (ft-lbs)
All power options leather. 350 TPI:
K&N; Airfoil; Custom 'Ram-Air'; Slp Runners;Poweraid TB spacer;
Fastchip;
SLP Headers; Borla Catback 50% open; Dual factory Cats;
March underdrive pulleys;
Accel Extreme 9000 wires, Accel coil; Hypertech rotor & cap; NGK platinum plugs;
Manual fan switch;
TB coolant bypass; smog pump delete
Spohn subframe connectors (black powder coat);
Pirelli P7000 Z245/50/R16 all season tires;
Energy suspention motor mounts
S Cobra Radar Detector; Z28 SS Floormats;
Technalon IV car cover (now on my dad'a 2000 Berger SS).

 

If you're refering to me, my pictures show I have dual cats.

If you're asking Casey, a 305 automatic TPI car has a single cat.

 

I have the old school tri-y SLP headers and y-pipe. The cat converter hits the subframe connector. It was about .25" clearance so I brought it to a exhaust shop and they just put it up on a lift and yanked on the whole exhaust system but nothing is broken so it's all good. They didn't charge me anything and no I didn't even know the guy. I guess he was just glad to work on a nice car for once.

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, Jon (350 TBI!)
91 Red My website

 

Where can I get those Alston SFC's.

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'91 Formula
383CI Supercharged
5-speed
3.42
12.34@117.04
on Drag Radials

 

They are sold on the Internet either directly from Alston or from Internet Racers Supply (listed as their "Terminator" series). http://www.racenet.net/. Unfortunately they have dropped the thirdgen ones from their online catalog. Call them. A local Member recently ordered a set and found out that Alston is currently doing a production run for Thirdgen's. Good luck, Lon.

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90 RS Convertible
http://www.sc3gfb.org/members/lonsal.html
http://www.taskerinc.com/gs3/profiles/Lon_profile.htm