than my LM?

I put it on and I honestly don't think it is loud enough. Everyone who said it was too loud must not like loud cars. I had a cammed LT1 with a cutout and headers and that thing was loud, not this...

Will a cutout give me a louder exhaust?

 

In my opinion cut outs will make anything louder but will it sound
good thats the question. I'd go for it. damn those are some great pics and the car is too lol! you should model at carshows

 

Were you running cats in the LT1? They make a huge difference in sound. My 99 Z28 had Mac headers, no cats and a cutout. It would give old ladies heart attacks if I cracked the throttle when I drove by. My 01 has a cutout but stock cats and it is pretty quiet.

 

I had cats in my LT1, and the cutout was right after the cat....

I would try to get the cutout before the cat in the LS1, if possible.

 

I don't think it would be witht he stock setup. LS1s have two cats and the passenger side cat bolts right to the exhaust manifold leaving no room to fit in a cutout.

 

Do the cutout because it is extremely loud.

 

Try running a 4" with a race series Flowmaster. That's pretty dang loud!!