All you need is the one way shaft and the mach backplate, what you'll have to do is elongate the holes on the back plate to make it fit.
Thank jedelaney for that mod. Also I am going to be running the werks clutch myself, but I think the stock LST2 alloy clutch shoes should do a decent job, without killing you're wallet.
Also heres a sight dedicated to the LST and hoping it up, its a little bleak on the step by step but I'm sure you can figure the stuff out, no prob. Aside from being able to put the mach start setup on it shows how to put the HPI setup on but its kinda pricey, I myself am going stick with the mach setup.
http://www.projectlst.com/
Check out the engine section, it actualy goes through putting in a nova.
Also check out nitrohouse at this link for prices on nova's, but I have to warn you they are a little on the high side of things.
Heres the link for the for the 3 port for $179, look on the left side of the page for where it says novarossi specials.
http://www.mugenracing.com/shop/index.html
Sorry, took a while to find everything.