Spectra is the only game in town who actually makes them. Personally I dont think they are that great but when your the only one you can cut corners and make a half *ssed part that people will buy because their is no other choice.

Tank straps from them were just bare steel and made in china... half the thickness of the OE parts. edges of the replacement tank were just a sharp cut and not rolled/finished like OE. Fuel filler neck vent pipe was just a stub going into the top edge of the tank, soldered in at the wrong angle, OE was a full pipe going to the center of the tank near the rollover valve and coming out pointed 90* sideways to clear the frame rail.