Did you read my experience with them ? Very difficult to make work , it took me hours installing the heads & checking clarance for each pushrod thought the entire range of movement x 16 . I am not sure what to suggest for rockers , we used Hughes & were told they were sorted out , to make them work I had to custom machine spacers & blocks to center the rockers over the valves, the heads are based on using an obsolete Mopar Perf rocker arm . Not sure if they have fixed the issue but the valley tray is Junk too , only a few of the bolt holes line up with the machined holes in the heads .
Definatly NOT a bolt on a go project ,
We used the EFI Victor intake & a Accufab T body only just over 1" thick & still had to use a drop base A/C to fit , I would recommend going to a multiport injection Not a T body injection for hood clearance & better performance .