Crank balancing (with piston weight) in EU?

Hi folks,

I'm based in Bulgaria and there are no crank balancers that can add the weight of the pistons/rods/etc. in the setup.
I'll be supercharging my 1971 Dart and will need to beef up the pistons - worried that the added weight (+43g per piston) will matter in a 1000+ HP setup.
Can anyone recommend a shop where I can do that?

Cheers,
Alex