Big Block 383 using SB K Frame 1967

I am so confused I have read in diff treads that u can just use a SB k frame for your BB build. And others have said that you need to change idler arm bracket ( 1967). I have a SB (360) in my 67 Barracuda with PS (Mopar) and PB all installed by last owner. So the question is can I just use the K frame I have and change motor mounts and use Borgens PS box.