hi!
Lunati have two 'happy' solid flat

404A1LUN 270°/270° adv, 243°/243°@ .050, .548"/.548" lift, 110°/104°
404A2LUN 278°/278° adv, 251°/251°@ .050, .570"/.570" lift, 105°/99°

I use the 404A1LUN in mu 418ci stroker

'70 Dodge GTX sb 418ci (Early A-body),
Lunati Solid cam 270°/243°@.050/.548", Edelbrock Heads, Weiand X-CELerator,
Holley Terminator EFI, Tremec 6 sp manual, 3.90:1, TTI Headers.