I'm currently running early GTM Engineering lower a-arms on the back of my coupe with drums and small cv's.

I've done a trade and got a full front disc brake setup so that I can convert the rear to discs with Golf calipers.

Now, can I use the existing a-arms with the new hubs?

If not and I need new lower arms, are std ok, or would it be better to get extended neg camber ones?

I can get adjustable steering locking bars via the Freestyle club.

It's not impossible but it's difficult to fit the reversed 'A' arms to new hubs, disc or drum. The hubs were machined to modify the lower ball joint fitting. A bracket was attached to them, adjusted for alignment then drilled and tapped into the hub itself to lock the adjustment.

I reckon your best bet is to fit Alan Brittons (Rossaspares) new conversion. No modifications to standard parts and no bump steer at all apparently.

Get negative bottom arms 1.5 negative, if you feeling really flash and want the ultimate get rod end adjustable ones.

The A arm will not fit without modifications but should be possible, so options are the std toe link set up or Allans new setup, which is a nice solution. No bump steer and a stiffer linkage compared to the other method mainly due to the use of rod ends. I noticed a good improvement converting the inners on mine to rod ends, and looking at doing something simular to Allans system if I do not get my new frame done in time [Allans system is not a direct fit to my current frame I have looked].

The GTM toe link option works best at a specific suspension set up if you deviate too much away from this and it starts to get noticable bump steer. Which will not happen with Allans setup in my opinion.

If it was myself I would seriously consider buying Allans solution, altho the engineer in me would make my own with my own little tweeks to suit my tastes

West

Hi
Thanks for recommending my new rear locking assembly.
I also supply the standard set up with LH track rod ends
track rods and subframe plates.
Please phone or e-mail for further info.