Hey Budd,
What manufacturer made your kit? Sometime the OEM (Repro) parts are not a bolt-on to these kits.
I can tell you on the British Coach Works TD replica they are indeed bolt on. Not so sure about the FiberFab (CMC) and other kits.
If your kit takes OEM hardware, then my suggestion is to “google” some British or MG car clubs and call MG Magic in Miami, FL. You never know what you’ll find.