What odd options could this trucks come with or put in after form dealers?

[M123]

Hi.
Just curious what odd options could be ordered or put in after by dealers?
Camaro did have Yenko and COPO, Volvo have a tons of things to add on after, same VW but I have never seen what they did offer to this platform?

If...
Are parts still available?

 

[Teamiez]

I wish they came with non leaking axle seals & oil pan options that’s for sure!

 

[M123]

I wish they came with non leaking axle seals & oil pan options that’s for sure!

My truck are totally dry if it's feel better.