That’s more or less the max brightness you can get from a drop in, without spending more money on the drop-in than the host itself.
From what I see from post 39 here, it’s driven at 2.6A. You can go direct drive, but you won’t see much difference because 2.6A in a P60 drop in is quite a lot of light.
For more options, check out Vinz’ custom drop in’s: Vinz Custom P60 Modules: Quad XP-G and Triple 219
