[dab1990]

I have been looking at my options and want to sometime in the future go with either:
X-Charger from explorer express or
a powerhouse pipeline turbo kit

I am not asking a question about those brands in specific but i do need to know which parts of my engine those two aplications put the most stress on.
do i need to replace them with forged parts?
i have read about shops like supersixmorotsports that have rebuild kits for the V6 but i would like to know from someone with expierience, is it necessary and worth the money?

any info with be helpful