Advance Adapters is your home for American Made transmission conversion adapters, transfer case conversion adapters, engine mounts, transfer cases, and more. Home of the Atlas Transfer Case a rugged and proven design both on and off-road. From daily drivers to high performance specialty vehicles and everything in between, the Atlas is the clear choice for your current or next off-road vehicle project. Advance Adapters is an automotive based company based out of 4320 Aerotech Center Way, Paso Robles, California.