This is probably going to sound stupid but here goes. Ok first of all I searched for this and did not find it, I didn't even find it on Google. However, I have seen them for sale before. Ok so what is it. The best way I can explain it is that it is an exhaust system that allows you to select from straight pipes then switch back to mufflers while still being in the cab of your truck. So you would have to run pretty much two exhaust systems. There would be a selector that would look like a ( Y ) that would allow you to switch back and forth from straight pipes or mufflers. I have seen them for sale in ancient JC Whitney catalogs. I seen it before my teenage years, and it was an old catalog then if I remember correctly. Pretty much it was issued before JC Whitney was online, to give you a better idea. Anyways, Can’t find anything like it now and was wondering, if anyone knew what I was talking about or know of some company that makes something like what I’m looking for? Any help at all would be appreciated. Even the piece I seen in JC Whitney along time ago didn’t look all that well made. And would probably have exhaust leaks and performance issues. However, I just find it irresistible. I want to be able to hear a screaming exhaust, then be able to hear a conversation in the truck a second later. Also, I feel the need to have a terribly loud exhaust with out waking everyone up at night and or getting a ticket. I can’t find a system to compromise between the two. Also I have a 64 suburban with 3 on the tree. The system that I saw worked like pulling a chock cable. I am going to use a floor shift but am going to keep the 3 on the tree shifter and use it to work the exhaust switch via cable. So If anyone knows of someone that makes one or just wants to throw in there two cents that would be great. Thanks a lot.