I'm not familiar with the gen 3 hemi, but I assume it has timing Mark's some where. Line them at 0 degrees #1 piston should be at tdc, check with your dowel to make sure. Valves for #1 cylinder should be seated at that point.
No timing marks. Will have to figure that out some other way. Damper is marked every degree from 0 to 360, but there is no reference mark on the front cover.