Found this ASW "retro" manual choke pn 15439
http://amsportworks.com/accessories_lutv.php# and ordered from Tom. (sycarms)
Finally took some time today and installed on both my spiderbox and LM200, and have to say I'm impressed... both seemed to start faster, and I could definitely tell I was controlling how the engine was running.
I've never liked the "auto" choke (enricher) and have been having trouble starting in this cold weather. I like this much better, well worth the money.
(and I know Tom ordered several more !)