thinking about doing this but unsure on how much light will be blocked by the bonnet does anyone have a pic of a mk5b with bad boy bonnet

As the weather had cleared up yesterday morning, me and the bro in law decided to have a go at fitting the spare roof(complete with frame) i got with my car as the old one was ripped and mouldy looking.   All went well and all was done ina matter of hours, however there is a problem. We have found that the roof seems to "bent" more to the right hand side of the car and needs pulling over when putting it down. I think because of this there is a number of small gaps around the roof of the car. A

anybody no how hard to fit a zetec engine into a diesel escort van