Pacaloy...
1224 is what you need... I have run them on a similar wedge with similar specs, and a 572 hemi also.... Springs pressure is what you need, and they are 1.625 too.... They are twice the spring those old K motion's are.
Isky sells them reboxed too...

[color:"red"]65 Hemi Belvedere coming soon [/color]
[color:"#00FF00"]557" Indy engine 1.07 60ft 144mph in the 8th 2100 lbs package [/color]