well i guess hes lucky then. if u really want to do this than dont bother welding up anything fancy, just take off the heat shroud, cut a hole in the top of the cat, empty out all the crap inside the cat, then weld on the heat sheild and weld the hollow cat back on to the muffler system.
got a '78 monarch with a I6 250 c.i.d, i love it.
Nah Hollow out your original cat with a 2.5" pipe driven down the centre
Try to keep as much honey comb in the original Cat when putting the pipe down its guts so the ceramic still heats up but the restriction is totally passed through your new pipe down the guts. The Honeycomb will still heat up so if coppers wave there heat wand under your car your cat still has temperature
99 AU Falcon JMM DEV 5 Kitty + Chippy :) Passin V8'z I Is!!!!
Turbo'z Suck I like Bein Blown
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