Is the fs conversion law 38 still available

[Timee80]

Ive recently bought a good condition zx5 sp with quite a few spares that im happy with, but have noticed a crack in the chassis at the back. Instead of buying a new standard chassis i wondered if the fs conversion was still available to buy.

Ive seen some carbon fibre sp chassi's that look nice but is the fs much better than the sp as standard?
My first buggy was a zx5 sp about 5 years ago and i loved it.
What would you do?