M54DS seems to be the reliable go to pump. I went with a Butler prepared 60 lb pump and hardened driveshaft on my build. A little pricey, but I liked the improvements they added. You’ll get lots of opinions on 60 vs 80. IMO a 60 would suits most builds just fine.
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Ken
'68 GTO - 464 - Ram Air II heads - 236/242 roller - 9.5” TSP converter - Moser 3.55 Truetrac ( build thread | walk around)
'74 Ventura 350
'69 AMC Javelin SST
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