[928uk] Battery for a 1983 928S 300hp

[leaoalexandre at sapo.pt]

Hello dear listers,

I need to buy a new battery for my 1983 928S (one distributor - 300  
hp) - the owner's manual indicates 88 ah, but the local auto battery  
store says that, according to their app, one of 74 ah is enough (I've  
also found that a lot of 928 owners go for 74 ah battery).

What is your opinion?

Thanks in advance!

Best regards from Portugal,

Alex
1983 928s manual