new here, need some help

ok i'm new here and this is my frist post, I was looking to bypass the converter (with some thing that can be put back to normal after a while) on the exhaust, 2 things

1 I saw some kind of bypass plug to keep the engine from thinking theres something wrong with the exhaust in my friends magazine, but cant remember exactaly what its called or find any thing like it online.

2 my truck is a 93 f-150 with the 5.0 the exhaust comes into the converter as 2 pipes and exits as one, how hard would it be to bend a pipe/pipes to fit right inthere?

why not get one of the high-flow catalysts? CARB and Fed's don't have a sense of humor on even owners removing their cat's anymore...

i thought about that but by lookin at prices this would be a couple hundred dollars cheaper, i was looking for a set up that could be taken off and the stock one placed back on when inspection time comes around