I used one for a core for a converter I had rebuilt. My rebuilder told me they have issues with heat behind the v8s in a truck application, so he always recommends a billet front half and he uses some internal parts from the v8 converter to make it more robust. I brought him the trail blazer converter, a truck converter, and bought the billet front half. Haven't actually used it, been sitting on the shelf almost 2 years - sold the truck I was going to put it in - so I can't speak to how well it works. My guess is very well, my torque converter guy has never let me down yet.