Is the ranger 2wd or 4x4? Carbed or fuel injection? What year ranger? Advance Adapters carries complete kits for installing a 5.0 into a ranger. Is the 5.0 fuel injected or carbed?
You could fab the mounts up yourself but it's a pain.
Biggest issue is clearance on the firewall and heater box and retrofitting the engine harness. If it's a 4x4 a 3" body lift usually eliminates the clearance issues.