The hose part numbers are 104 094 35 82 and 104 094 36 82. The ones you have are probably very brittle and will crack/break when you remove them. If you do break the plastic nipple(s) off the bottom of the resonance manifold, you can glue them back on very easily with Loctite Super Glue Gel Control. I've done two of these--on the second one I was able to avoid breaking the nipple(s) by sawing through the brittle hose with an old hacksaw blade prior to moving the manifold.

Also, when you reinstall the upper timing chain cover, put the cover on first, then insert the drivers side chain guide retaining pin through the access hole in the cover. If you don't do this, it is almost impossible to install the cover without "rolling" the U shaped seal.

Don't reinstall the tensioner pin without "zeroing" the internal ratchet.

Make sure the intake cam sprocket is correctly oriented relative to the cam when you lay the chain back on it. (remember, this engine has variable intake timing)

J. M. van Swaay