What engine sizes were availablefor 1970 Autostick?
Based on a quick scan of a number of Beetle-related web sites, kookoburra, looks like the '70 Autostick had the same 1600cc engine the manual transmission cars did. Hope that helps!
Search Volkswagen Beetle Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Volkswagen Beetle Experts