Personally I'm thinking the 3rd Gen hemi is the way to go. The heads supossedely flow over 300 cfm in near stock trim so they should easily support over 600 hp NA. A turbo or supercharger and you're there.
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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