[MikeK]

Duffy1,
Triumph rod inserts are readily available. There is a huge collector base, complete with dedicated suppliers and their catalogs, just like SBC & Tri-chevys, VW beetles, & Fords, T, A, B, EV8. Here's one supplier: LINK

If you think things get a little 'hot' over here, you should see those Brittish car collector boys beat to death a fine point detail like which way the flats on a lug-nut should face.