Decklid question

[Polkaschlingel]

Hi all,
I am pretty new to this forum,
but had been infected with the aircoolded virus 15 years ago.
Probably someone can gimme some answers:

Got an new t1 engine as seen on the pic below:
Has Riechert oilregulator??(not sure for that translation)
instead of stock oilcooler and front AKG oilcooler.

So my question is: can I run it with stock decklid without
louvers, or do I need a decklid like 1302/1303 to prevent
overheating?




The wiring still looks confused; pic was taken a few minutes
after installing. It's a 'Jubi' bug. 1 of last 2400 limited editions officially sold by Volkswagen Germany in 1985/86.

Thx in advance

Cheers P.