Need Help: HTT64/65/13ss

[Urbs1391]

I'm entertaining the idea about running twins. I currently have an HTT64/65/13ss, would this make for a good top charger? If not, being an automatic would you reccomend as a size for the top turbo?

I've been searching many places and many sites, can't find answers. I'm looking to be in the 550-600hp range.

 

[Urbs1391]

Sorry wrong place.

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