Boot Jump Measurements for XL 2018 model

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Hello, This is my first posting on this site.I have recently purchased aI  a Vauxhall Combo Life 1.5 Turbo D Energy XL 5dr  date of reg 29/04/21. ( tried to find a new Berlingo same spec but waiting period 6 months plus)
I have looked at all the threads relating to boot jumps on this forum and now have a wealth of information (particularly Gravity's posts which are amazing)
I am wondering if anyone on the forum has build a boot jump for an XL,  if so do they have any plans measurements that they can share.
Any advice would be appreciated.
Thanks for reading 
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