Want to build a 77 360 suggestions please

i just acquired a 74 Duster with a 360, It did have a 318’, I want to build a 400+ hp street motor, any suggestions on which way to go would be greatly appreciated.
It has a mild cam and a a 360 Edelbrock manifold with a 750 Edelbrock carb.
The engine is pretty much gutless.
I like the 268 Voodoo cam, would like to build around that will probably also run FItech injection on it.
No LS for me