#Bigg Boss93 :
I would like to suggest to use the duhen as base, not because it's a fake version of the del sol but because it's the only slrr car that doesnt give any kind of errors(such as self-turning, problems when you try adding running gears etc.).
I have always used that until i started writing rpks from zero(and still main cfg comes from duhen).
Bigg Boss93 sorry the noob question, why you write rpks from zero, which are the differences, besides the obvious