I need to replace the muffler on my 3.8l 91 Tbird. Oddly enough this forum doesn't have a sticky listing stock exhaust sizes for the various 3.8/4.6/5.0 engines.
All the tech articles list recommended sizes and some info on V8 sizes, but nothing on what's on a bone-stock v6.
All I'm looking for is the sizes I need to order a cheap, generic replacement muffler and appropriate 90degree adapters to plug it in. I have access to a welder to permanently attach the adapters to the muffler before final installation.
Unfortunately, most local garages are chains, and don't like someone who wants to do the work themselves, and the local parts places only list part numbers, not sizes.