Blueprint crate engine

I had both the Iron Head 408 and the Aluminum Head 408 in my '67 dart and after I started with the smaller one it was a blast but I wanted that little more and the motor ended up having problems so had to go back to BluePrint anyway and I opted for the higher output version. It runs great is a little quieter and the extra 80HP is definitely worth it - IMHO - If I had the extra 2K I would spend it every time. From a service perspective BluePrint was exceptional, they had a video of the old motor and agreed there was something not right and paid to ship it back tore it down and made me a sweetheart deal on the Aluminum head option. There is another thread this week on flat tappet lifters and BluePrint also suffers from the challenges with quality suppliers for that configuration so in my experience the Aluminum head motor is the way to go.