I know about the gearbox issue but can I still use the front suspension or do i need to use the cosworth front suspension*This is what I am going to do*remove the ST motor gearbox and rear suspension and then fit the Cosworth motor gearbox and suspension*I don't think you need to buy a cosworth RWD floorpan you can just modify the ST's floorpan but i know it will be easier to get the floorpan as it has the fixing point for the diff and suspension*Also Cosworth parts are very scares in South Africa so
I might go with a BMW M3 diff and rear suspension as it will cost less and will be easier to get hold of