I really didn't know they were even made. Sorry. No engine builds over here in sometime and this car I am building has finally gotten painted after being off the road for 17 years. One of those projects that kept getting put off because other ones were more fun at the time. I just talked to a guy a reputable local machine shop and he said they did a couple with the Stealth head and he needed to rework them some that they are not a bolt on as they claimed. Something with the springs and retainers. He said that was a couple years ago and it makes good power and the guys are happy with them. He claims the Edelbrock is a bolt on but a little more money and less stock looking. Sorry I lead a sheltered life. I don't get to shows and stuff like I use to. I hope to change all that again. This car has to get finished!