I've not done the bv43 but yes I understand it's a direct fit, just watch your clutch as it's smaller than the avf and doesn't handle much of a torque increase on a standard unit, you'll want a sympathetic map or an updated organic clutch.
EGR, I did it egr side. If it's a pre 03 reg that's all you'll need to do, no unplugging required, plus if you visibly modify the system you will fail an MOT without a friendly tester.