Clive,
The easy option is to buy the parts required from Robert Grinter https://www.robertgrinter.co.uk/styled-2/styled-26/
To successfully do this you will need to take the body off the chassis as work is required both ends and it makes life a whole lot easy.
By the way what is it’s chassis no: 10xxxx or the body no: 737 – xxxx
Laurence
