Tecnigas RSII is what people usually run on the LC Super 9.
..i have a new technigas Next...still in the box.....is that worth a crap?
Yeah, for a 50cc engine it'll do decently. A lot of people report similar speeds between the Next, and the RS. The RS is for 70cc engines, and the next for stock, though I've seen the Next used with Char-mo and Prima cylinders that worked pretty well. Those Char-mo and Prima cylinders are basically re-bored stock cylinders, so the timings are lower, and the performance is barely better than stock. The Next will help squeeze some more oomph out of those engines.
If you go for one of those cylinders ever, they are not "plug and play" - chamfer the ports and clean up the casting flaws before running it, and it'll run okay and last well enough. Otherwise, it's likely to be problematic.
If you're not going to use it, I might be interested in a partial trade or something.
~Josh