RE: TF 1/5 Razor Conversion
The full Top Flite Gold Edition Kit comes as the Razorback version. It has a conversion kit to the bubble-canopy version:
TOPA1616 P47 D-25 BUBBLE CANOPY CONV US$24.99
These parts can be ordered through any hobby retailer who sells Top Flite kits and accessories.
There is no conversion kit for the ARF and RTF models to convert to razorback version from the bubble-canopy version.