The 061 is a big-valve press-in stud head with the later 14 degree valve angle, these replaced the small-valve 20 degree 143 heads mid-1967. The 061 has its own unique combustion chamber similar to the RAIV, it's not a closed bathtub chamber.
I would put a new cam in it, a factory 068 cam would give it some punch and keeps things simple.
New timing chain set and oil pump along with all new freeze plugs while you have easy access.
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1964 Tempest Coupe LS3/4L70E/3.42
1964 Le Mans Convertible 421 HO/TH350/3.08
2002 WS6 Convertible LS1/4L60E/3.23
1966 VW Type 2 Single Cab Pickup 140hp 2276
1956 VW Type 2 Panel Van 36hp 1200
1957 VW Type 1 Beetle 180hp 2276
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