2Litre

Hi all I am fitting what I believe is a saph left rear trailing arm and have taking my 3 door antiroll bar pick up off my damaged 3 door trailing arm and welded it to the outboard of the saph one but I have noticed that the hub flange on the 3 door one is thicker!
See pic,s , is the thinner flanged saph trailing arm going to work/fit ? and is it a 2wd saph one to start with?

Thanks for any help.

Cheers. Tim.