Here I am under the rear of the car fitting some new bolts to the box section that support the wishbone pivots.

Our first design of this car involved the using of self tapping bolts in this area, but to make this stronger I am replacing all the self tappers with high tensile (10.9) pan head bolts and nyloc nuts.

We have also used a sealing/bonding agent around the bolts and washers to help them resist corrosion.