I'm running a 3b over my 35/40 with everything in my sig. I saw 62 psi before 3000 rpms a couple weeks ago and the go pedal wasn't all the way to the floor yet. They spool pretty nicely, almost like stock. With my 160 pump never being off the truck, high flow dv's and ddp4's, it was just a light haze behind me. Just how I like it. I can't compare it to an ht60 though. Never ridden in a truck with one on it.
Just my $.02