I need an FEA engineer

I have designed some suspension components to convert my car from a leaf sprung front end to independent coilover. There are 5 pieces in the set. The main centre piece along with two lower control arms and two spacers.
I need an FEA carried out to confirm they are strong enough for their intended application with the intention of getting said components certified and signed off for use in a street registered vehicle in Australia.

This type of conversion can be found in various forms for this vehicle globally but none with appropriate analysis or certification to confirm its strength, hence a track use only application from all suppliers.
This has meant my engineer is not willing to sign off on any that can be purchased and ultimately forcing me down the road of design and testing of my own.
The car in question is an FSM Niki (Fiat 126)
The components are held to the car by 2 x M10x1.25 studs at either end of the centre piece, with M12 heim joints connecting the centre piece to the two lower control arms before bolting to the hubs with another M10 bolt. The car has a weight of 740kg
Any other specific information can be provided upon request as im unaware what else is required for testing purposes.

Thanks