You have to consider that all the external cooling components outside of the engine are designed for the late model cars that they come in. Mopar sells OEM parts and has no idea what all cars this engine will end up in and which OEM Hellcat parts would fit them.
I have a Hellcrate on order, expected in about a week. It will be going in my '69 Cuda. I expect to have to figure out what areas would be good for inter coolers and research what (probably aftermarket) inter coolers will work.
The Hellcrate and its accessories are designed for plug and play. If you want one, don't be afraid of it. Your biggest concern will be in reinforcing the chassis, tubbing wheel wells, etc so the car can handle the power and get traction. Oh, and brakes.......don't forget good brakes!
Wow! Welcome to Moparts!!! Please tell us you will be providing pics and info on this project!
This will be of great interest!