To be deadly sure of which engine you have perhaps you could write to them at -

<font color="#000000">Aurora Model Mfg Co.
16,Shakespear Sarani
Calcutta, India

Or email them on -

[email protected]

Or ring -

</font>Mobile Ph. No. +919831117881<font color="#000000">

Or view some nifty pics of the factory here -

http://www.flickr.com/photos/joost-i...n/photostream/

Cheers.
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