Frederick, thanks for replying.
I hope the car finds a (properly informed) new owner now that the add on E-bay has been adjusted. Please note that a more correct determination would be
1976 Porsche 914-6 3.0 Conversion, not clone. Furthermore, instead of mentioning 916 I would refer to the 914-6 2.0 (1970-1972; being the original aircooled flat six) and claim that your car is much faster, "truly" making it a Porsche. In the specification department (weight to power ratio) your car would compare to a 916, but that is different story from how you put it now! A comparison with the 914-6 GT would also go a miss, as this a lightened car with a specially prepared engine solely intented for racing (and is even more a purist car than the sought after 1973 911 2.7 RS).
Still, I feel that the price tag is big hurdle for the average 914 enthusiast...