Off the shelf LT Bell means LT body as well. LT43 Bell is going to come with a Light Weight Body unless you special order it. If you get a reverse leadpipe Bach you will have a LT body, but you could have a regular weight bell. So to have a complete LT Bach (which I have with my Large Bore) you need the Star sign on the bell. LR Bachs come with LT bodies. If you have no Star on the bell, you have a regular weight bell. The bell is buffed once more for LT, so's the body. I have a 37 regular weight bell on a light weight body, 43LR pipe. The regular weight bell really ties the sound together, the LT bells can loose a bit of projection. The H bell (heavy) is very nice for this as well. A little more work but worth it for the sound, does not break up at high volume.