yup.. that is such a good deal.. I couldn't tell you how it runs on other engines though.. I haven't tried it.. I think my P5T is hooked up with the 2050 so I won't change it... and my VZB's which I'm not running really.. ran great with the 2050 also..
but, the WS7II seemed to run a little to crazy in the middle of it's power curve.. and not punchy enough right where you need it.. the JP-1 seemed to cure all the problems and make it have a linear powerband.. I love it