just comparing them over the internet, Spaghetti Engineering seems to have the brighter lights over the NPD, I am basing this opinion on pictures, their video and the 128 bulbs in the description.

I think CI is selling Spaghetti as their brand, but Spaghetti states only Cascading is the operating mode. I kinda like NOT cascading?

Spaghetti also sells a better reverse light than CI.

Is the 67 Chevelle front turn signals the same as a 67 Firebird? My lens is white, but their's is yellow, but seems to be the same shape?

I am at $318 plus shipping. 1 set of lights, 1 flasher, 2 reverse lights