Now that I bought the Edelbrock 705 Horsepower Top End Kit, I will be using the cast iron Hemi heads on the 426 Hemi short block that I bought last year. This 426 Hemi engine will be going into the yellow 70 Charger R/T SE. I had planned to upgrade the 472 Hemi engine, so I bought an Indy mod man intake, and a camshaft and lifters matched to work with the intake manifold, dual Carter carbs, and TTI headers. All of these parts will be used to build the 426 Hemi engine.