Airbox switch; Old ('79) for new (80) Possible??

[fishypaws]

Hey Y'all, I have always thought that the old (silver pre 80?) airbox/filter on airheads SUCKED literally and figuratively. Can I upgrade if I find a complete airbox? Are the same carb "horns" gonna be OK?
Let me know O' purveyors of sage wisdom of all things R65....

[Bob_Roller]

According to REALOEM.com, one intake manifold, that is the plastic tube from the airbox to the carb, is different on the '79 model year.

Also I am not familiar with the crankcase ventilation system on the '79 model year bikes, but it appears to be a different setup from the '81 and later model year bikes.

But other than those differences, it looks like a pretty straight forward job.

You will have to plug the two holes in the later airbox, where the emissions plumbing was located.

The flat air filter is also about a $30 part, I don't know what the cost is for the round filter.