Yeah the RHD drive box is suited to the custom fabricated pedal plate and pedals. It’s a full custom job and not intended to mirror the left side. Im not going to run a booster at this stage. My GT40 had non boosted brakes and I loved it.
The battery is going in the LHD pedal box recess. I will make a cover for it. I will use a new small Lithium battery. will be safely tucked away and look clean. I want to be able to put a bag in the front section tray so no dropped battery.