Don't want to steal the thread, but I am looking at all the fun you are having and could use some advice based on your install of the Dougs. I bought a set of Dougs for my new stroker which is all together on a stand with the tranny and all set up and ready to roll under the chasis. I have a pair of stock exhaust manifolds on the aluminum heads right now as Dougs told me that if I start and break in a new motor with the headers and overheat them, the ceramic warranty is void. Said to start the motor with old pipes first. My question is this. If the machine shop set the motor up and I know the top dead center is perfect. The Holley carb is brand new and I understand these are as close to plug and play as they get which means Holley has set up and pre-run these carbs. I cannot understand how I would overheat the motor?? I wanted to install the Dougs while it is on the engine stand before sliding it under the car? I just think the whole deal will be much smoother. But I do have to run the motor for that 30 minutes to break in the cam. Should I risk overheating the pipes or do you think I can pull this off without overheating them? Looks like a lot of work to install stock and then have to remove them to install the Dougs while the motor is now bolted in the engine bay????