same speed less revs

[ray bear]

I hope Im posting this in the correct section, If Dusty moves it I guess I got it wrong and will consider my self severely told off.  Im upping the gearing on my 73 Eldo but having difficulty finding the two gears I require which are the 5th gears from a Quota 1100 ES, Sport 1100 and Daytona RS, they have a tooth count of 26 / 19 , I posted a query on here a few days ago but limited response so will ask again, has any one done the mod and would any one have the gears Im looking for. 

 Thanks Bill