I would recommend you to stop making a thread for every single question you (ok one or two exceptions like above) want to ask us for starters. Out of the countless threads you've made already, i'm sure it's not impossible to bump ONE of them instead of creating another thread, clogging up the forum. Another option is to use this amazing utility called a search engine - www.google.com.

Ask yourself this - why buy an old car when there's a new and greatly improved version coming out fairly soon?

The Magnum comes with a new .18 engine as standard, and judging by the way the MT2 performed with the NT-16, i'm sure there'd be no need for an engine upgrade straight away, if at all.