As regards the turbo heat shield, I think it’s the rear section that needs to be radiused to suit the extra diameter of the dump bell mouth.
Temporarily no clamps might work, I use zip ties on the vacuum hoses and the pcv 3 way and bov vacuum reference hose.
Generally jubilee clips elsewhere aka hose clamps.
I reinforce the ends of the head breather hoses using heat shrink, as they tend to crack next to the head.
Heat shrink can be used as an alternative to zipties, especially smaller vacuum hoses.