2002roush

I just bought a 67 hi-po and the guy told me it had a vibration. Got it for a steal so I bought it anyway. Doing some research I saw he has the wrong balancer and flywheel. What weight do I need for the hipo. I see on some websites that the flywheel is an original 30 oz balance but i can only find 28. I will buy the Scott drake damper for the hipo but which flywheel should i get? Fyi i will be running 4 speed toploader. Still need to buy the clutch so it doesnt matter about clutch size