Thanks again, looks like the two best options are:
1) Edelbrock 2102:
https://www.summitracing.com/parts/e...ions/year/1971
Cam and Lifters, Hydraulic Flat Tappet, Advertised Duration 278/288
Lift .420/.442, Chevy, Small Block, Kit
Basic Operating RPM Range: Idle-5,500
Intake Duration at 050 inch Lift: 204
Exhaust Duration at 050 inch Lift: 214
Duration at 050 inch Lift: 204 int./214 exh.
2) Crane 100032:
https://www.jegs.com/i/Crane-Cams/271/100032/10002/-1
Energizer Hydraulic Flat Tappet Camshaft & Lifter Kit
Lift: .427''/.427''
Duration: 260°/260°
RPM Range: 1000-4600
CARB E.O. #D225-21
Operating Range: 1000-4600 RPM
Duration Advertised: 260° Intake / 260° Exhaust
Duration @ .050'' Lift: 204° Intake / 204° Exhaust
Valve Lift w/1.5 Rockers: .427'' Intake / .427'' Exhaust
Gonna be a hard choice, guess it's pick one out of the hat time ;-)