I've recently started an LST2 conversion too and am considering the fabrication of a motor mount. I'd rather wait on one thats already fabbed but may not be available by my next race. It's being made by "TheDude" (TDR Racing)on LSTForums: http://lstforums.com/forums/viewtopic.php?f=42&t=12549
The Latest posts indicate he has sent the proto's out for testing and final mod. suggestions; I'm guessing it'll be a month or two before his production units are available. I've already got one of his Single Speed Hubs coming:
http://lstforums.com/forums/viewtopic.php?f=42&t=11130
I'll be running it with a FOC with "swap mod", a 59T TiNi Losi spur, a 25T pinion from Mike and my MMM/1515/1y combo. Calcs out at just over 35mph on Brian's speed calc. I'm hopin' to be Smokin' Revos with it in the near future.

I considered trying to use the Tekno mount but I think spacing, pinion adjustment, and the Tranny mount may cause more issues than I want to deal with.