replacement 2.0 Aircooled pushrod tubes

[Northfalia]

hi All

I have been having problems finding removable Push rod tubes for replacement 2.0 CU Aircooled pushrod tubes without taking off the heads would anyone know wether these can be bought ?

would the 1600 CT be the same?

Thanks

[Northfalia]

ok I have just discovered how the 1.6 differs from the 2.0 the 2.0 Push rod tubes are changed by removing the rocker covers and then the rocker assy there is a "Push rod retaining spring that holds them in place once this is removed the tube pull out through the head