Jenks,
before switching to the UCE engine RE (India) produced 3 E/S 350cc bikes for the home market, the Electra based on the classic Bullet engine (not to be confused with the Electra-X 500 sold here), as well as the Machismo and the previously mentioned Thunderbird. The Thunderbird and the Machismo both use the AVL lean burn engine. All three bikes originally appeared as kick start only models, the E/S variants appeared towards the end, if I remember correctly.
Watsonian-Squire only imported the standard 4 speed kick start Bullet in 350 form, but a number of the others have found their way over here as grey imports. Here's a modified E/S Thunderbird I saw at the Royal Enfield day at Sammy Miller's last year. Does anyone here own it?
A.