Welcome aboard Allen. You already know there were a lot of Kiwis involved in European racing during the Kiwi Mafia '60s and '70s, especially as ace spanner for hire with loads of knowledge but the local scene guys who post here know their stuff too.

For a long time NZ was where old racing cars came to die but were turned into Morraris etc instead. Mostly returned to their original form but now days there are some amazing saloons being exercised here and of course a pretty good line up of F5000s.

I hope the info Chris got regarding March 742-U1 was of some help.