To avoid issues when a hose needs to replaced by exotic hose, I decided to use OE 964 Turbo setup, but with after market silicon hoses (OE is way to expensive)
Set contains too much hoses as 964 Turbo is still with K-Jetronic, but is still much cheaper than buying single hoses.
At that time I made also a manifold inlet port due the different hose size. So I had to make another one to fit stock diameter. Removing the old one went fine,just a litte heat and correct choose of tool
New one
Because the valve is not at the same position as stock (and different layout as well) I had to cut the hoses to fit new valve. Also i made the port longer. This way I can use stock hoses if needed.
And this is the result