Gangsta Large

Barbara looks back the way she came and sees a gleaming black truck rolling toward her along the boulevard, moving fast and weaving from lane to lane. It’s the kind with oversized tires, the kind the boys at school call a Bigfoot or a Gangsta Large.
Source: End of Watch by Stephen King

What is the literal meaning of Gangsta Large? I am just intrigued with this naming and I could not figure out its etymology.

Thank you

There is no literal meaning of the phrase - the two words have their standard meanings as far as I can see - a large vehicle used by gangstas.