My father has a 92 f150 351. I have yet to see the problem but he said a tube has apparently rusted and detached itself deom the exhaust pipe. This is in the area of the cats. Does anyone know what this does first of all? Secondly we talked about redoing that area of the exhaust all together. He currently runs flowmaster mufflers into a dual rear exit. Would like to see about running true duals. I have ran mustangs with off-road pipes and o2 cheater and I was wondering if this can be done for the trucks. Or is it better to run high flow cats? Do not have to worry about emissions. AAny help on this would be great, or if you can direct me elsewhere. What company could I get the parts from?
Thanks

 

Where is the broken rusted pipe? is it the y pipe itself? I would put high flow cats on it and true dual it with Flowmaster 40s.