6.1 what timing cover to just run waterpump/Alt

[biff426]

I am doing a 6.1 for my 66 Coronet I just want to run the waterpump and Alt what timing cover should I use. I see the post about pulleys and such and I don't want to run into any issues. Also are the 5.7 and 6.1 timing covers interchangeable? Thanks for any help.

 

[5.7 hemi]

Car 5.7 and 6.1 timing covers are the same up to present, truck is different.