Yet another Killer Bee clone by Estes?

This forum is a virtual gold mine of information on fake Killer Bee engines that were thrown together by Estes, and sold as original. Isn't that fraud by the way?

Mine has the usual mix of parts, with what appears to be a real KB backplate (measured correct intake diameter), and a cylinder with unequal size exhaust slits, plus a 1702 high compression glow head.

The crank however is classic Babe Bee, as is the needle valve. The crank does have the proper no drag drive washer, and starter spring.

It's still NIB so the compression is excellent, but without further disassembly I can't tell if the bore is tapered, or the piston lightened.

What I do notice is that the piston has SPI, but it seems strange to me to have such a large bottom exhaust slit, with only a few thousandths opened for SPI at TDC.

Does anyone here have an original Cox Killer Bee to verify that as correct?

Thanks to Bernie I have the proper crankshafts, and yellow needle valves.

What I don't know is if Cox stopped tapering the KB cylinders toward the end of production?

Thanks for any info guys.

Bill