I have seen a few bolt on an air filter directly to the throttle body but you run into issues with heat soak and taking in hot air from things like the cross over exhaust pipe. You can do things to minimize that. A lot of the short intakes Ive seen use some short PVC piping to route the air filter over to just behind the headlight which helps with the heat some.
I dont think the OEM hose would be long enough to do much past connecting to the pricey aftermarket intake systems.