I am thinking of getting these. they say no floor board cutting and they are supposed to fit in with no problem. they are weld in. does anyone have experience with these?. thanks alot

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*1989 RS
*Red, Daytona Turbo fiberglass hood, chrome 16x8 IROC wheels
*355 CID
*TPI ported plenum, SLP siamesed runners, Edelbrock high flow intake
*Edelbrock TES Headers (getting SLP 1 3/4 this summer)
*Richmond 3.73, Auburn Posi
*Modded 700-R4, 2800 stall converter
*NO recent time slips.

 

I've got them and they do everything as advertised. One major problem: If you have headers with a 3" collector going into a 3" cat you're going to have contact between the pipe and the SFC. This can be remedied easily by cutting a notch from the front end of the pass. side SFC to where it makes the slight bend downward following the floor pan. This will allow you to use an Edelbrock TES 6872 with 3" cat with no trouble. It may be the same with the SLP headers and then again it may not. I also don't know if they will work with dual cats. Someone else here may though...

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Mongoose-NCTGA-1990 Pontiac Formula/305 TBI-700R4 with Edelbrock Performer TBI intake,TES headers,and STB,K&N,MSD-6AL,Holley laser shot coil,Accel Extreme 9000 wires,Jet Stage 2 chip,TCI shift kit with corvette servo,Richmond 3.73 gear with Auburn 3 series posi,high flow cat,SLP 3" cat back,Eibach sportline springs,Energy Suspension poly throughout,Lakewood LCA and adjustable panhard bar package,SSM subframe connectors,IROC wonder bar,Tokico 5 way adjustable struts and shocks,Autometer electric fuel pressure gauge,Alpine,JL Audio,MB Quart,92 GTA taillights,92 GTA aero wing and hatch,Steve Spohn LCA relocater kit and torque arm,MacEwen White face gauges,84 T/A cold air induction air cleaner,Grant Formula GT wheel.

 

I second what Mongoose just said. I had my SSM's welded in on Monday. The exact same mods had to be done to mine because of a lack of clearence with the y-pipe. Just to tight in there. Admitingly, we didnt take enough off the subframe conn. and it still touches in a spot. Hopefully it wont rattle. If it does I'll adjust the clearance with a pry bar(gently) or something.

 

do you guys have installed pics?