if the design and know-how they search why not partnered with some european engineering company from the advance one like Timoney Technology Limited to smaller one like supacat, they got the know-how and experience in design and manufacturing defence vehicle and willing to give tot.
for example timoney help design aussie bushmaster, singapore terrex, and taiwan cm-32. while supacat design and build HMT400/600 recon vehicle for british army and other special forces.
Timoney Technology Limited
sc supacat
https://supacat.com/products/