These front subframe replacement crash can bars will save space, weight and allow easier access to the top pivot of the suspension. 
Similar design as the race cup cars made from  1"  tube and zinc plated for corrosion resistance and I have seen some of the ones used on the MG cup cars help prevent the subframe distort under a minor impact.If they are good enough for racing then they are good enough for road use.
The stock ones rust easily and weaken substantially and I have seen some crack due to fatigue after all they could be over 25 years old! Blasting and painting doesn't doesn't strengthen them and at around £85 each new it makes sense to swap them.
These will add some more rigidity to the subframe and are a far cheaper alternative to the stock part.
They will aid airflow from under the car to each side thus reducing front end lift..
When using the FCCKit it is advisable to replace the crash cans with these parts whilst stripped down.
Please note not all subframes are dimensionally correct due to worn out assembly tooling. This can have an effect on how these parts fit and although they were made using a brand new subframe as a basis for manufacture they may need some slight tweaking to make them fit your car. The subframe can easily 'rack' after a minor kerbing.  Please advise if you experience any problems.
Sold as a pair L/R and with new M10 screws and washers for a quick easy fit.