You forgot pics of the car
I realize that you are in Israel and the market is scarce there, but why not just buy a g50 car to start with? You might even be able to get all the work done here and ship the finished product for less... maybe I'm off a little.
Will be a fun project!
Best regards,
Michael
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Michael 
'82 Euro SC 'Track Rat' 22/29 Hollows, 22/22 Tarrets, Full ERPB F/R, Rennline Tri Brace, Glass bumpers, Pro 2000's, 5 pts, blah blah blah
'13 Cayenne GTS