Need Help with HTT64/65/13ss twin?

[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

 

[cquestad]

I use that over a 488....and it can make 2x the power you want.

Switch to a 62 wheel and cover over a 475.

 

[Urbs1391]

turbo..

I use that over a 488....and it can make 2x the power you want.

Switch to a 62 wheel and cover over a 475.

488, where would I start to look at?