[Theshape]

could a 2-speed tranny be put into a nitro X-cellerator and would any one of these bolt up in place of the .18 engine?

1. OS Max .12 TR

2. Sirio .15

[markallen]

Just to let you know I'd pass on the Sirio .15.I had one but traded it.Didn't impress me at all.If it fits get the OS.

Mark

[Nsxshogun]

or you should keep the .18 cause im sure that will match the performace of either of those engines. If you are trying to get the turbo version of the O.s you might not be able to find turbo plugs.
just my $.3 cents.