Stock 318 building with Justin

should work good
and they are close to you
fatter nose should wear well
say compared to the Lunati 701

• Advertised Duration (Int/Exh): 256/262 Engle is in the 260 range lunati @.006 engle @.008
• Duration @ .050 (Int/Exh): 213/220 lunati has faster action which you don't need
• Gross Valve Lift (Int/Exh): .454/.475 lift is about the same
• LSA/ICL: 112/108 engle is 110 but I bet they grind it just for U
• RPM Range: 1000-5500

you are so much better off either way than with a universal cam
https://www.chevelles.com/forums/155-2006/18213-anything-better-than-xe262.html