Originally Posted by Scott Fisher
Good engine. Long stroke. There is general info on Nova's website. The Mugen X12 is the same engine as that one.
Murnan says the timings on the Mugen X-12 and the NS12 S3/A1 are significantly different. I know all the parts are the same but the timings are not.
I have had both and personally preferred the Mugen X-12.