Hi Tech build the grp Superformance Mk 111 rollers which are licenced by Shelby with one set of moulds and the grp CSX 6000 Series (427) Shelby cars ($80k)with another (slightly more accurate set of moulds). However you will pay an extra $30,000 for the privilege of having a 'REAL ONE'!
The CSX 6000 aluminium (427) cars use Kirkham built bodies and chassis but to Shelby's specifications and the most expensive CSX 1000 series have the NDM bodies.