i did the vortex fan a few years ago. it all swaps out inside so no need to disturb the roof area. BUT YOU NEED patience as the instructions are less than detailed
especially where you place the adapter to allow the new knob to operate the cover to open it.
i like it . good value
i got mine at amazon which was 30 less than CW
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retired Navy driving the short bus 2008 Tuscany 4056
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