Sunburst Not having a Heavy duty block?

So I can't remember if the old sunburst had a option for a heavy or even a ultra heavy duty Engine block option since we have turbos.
BUT
The new updated sunburst has no option and I was wondering if it is suppose to have a option for that?
I am using a turbo that is Not a mod. and I am over torquing my engine but I don't have a option to make my block stronger.
(I am not complaining)
I hope I can get a answer for this.
Or a fix that I can use a turbo that won't blow my engine.
But I am able to use a weak option.
But Wanted to know if there was a option or plan to give the sunburst a heavy duty- Ultra heavy duty engine block option?
Or if there is a way to (FAKE) it?