109’s had carburettors that could pull negative G’s without cutting out. Early Spitfire’s didn’t so if you just pushed the stick forward the engine would cut out.

However seeing as that’s at least a 109G… then the comparable Spit would be able to pull negative G’s anyway.

Regardless, most pilots stuck to pulling positive G’s whenever they could. Neg G’s make you want to puke and pulling a wing over gives you better visibility and control anyway.