Front lower control arms - Alternative?

[evinX]

So i came across these arms and they look like a sweet opportunity for a UK company to make these.

The bodies look fairly do-able but the balljoints were always an issue.

This company seems to be using a replaceable balljoint from another Toyota. 

If the balljoint used matches the Supra ones this should work once the arm and this new balljoint are made and angled correctly.

Seems like a sweet idea and they can use poly bushes to.