Well started by cutting off draw bar and all spring mounts.
Then made the front spring mount out of 90x90x3mm, 225mm long and the rear spring mount out of 75x75x3mm, 145mm long.
Then modify the draw bar to fit and add extra bar with the left over 75x75x3mm RHS.
Sat it all together to see how it looks. I thought l might have to remove the legs, but they just miss. So just need to weld all together.
Also need to thank go jeep for the info. Cheers