a RX3 diff is stronger than the orginal jap diff... i know of a rx3 coupe with a 20B non turbo in it making like 380HP in QLD with just with the stock diff. + RX3 diff is only 1350mm wide. prefect fit.
weld closer to the door way to allow the fumes to escape easier & better air ventilation is always better for ur lungs... keep up the good work... love KE26 wagons! i use to have one 30yrs ago LOL... maybe i should show u my KE25 sprinter almost finished after 8yrs...