Wow, this is very timely for me as I'm helping my brother in-law with his engine. It's a 507 C.I. RB, 4.25 arm, 7.100 h-beam rods with the 240 TF heads, Icon 842's, Lunati solid roller 260 @ .050, 600" lift. and using the aluminum 6 pack. It's going in a '70 Road Runner with a 727. It's really cool to see a similar combination and to have a rough idea on what to expect. Your engine is a beast and we'll be pleased to get in the same neighborhood as yours. I also noticed that you have a Sublime GTX as your avatar and his RR is Sublime as well. Kinda freaky the similarities!