171702 with 1.15 ar

S60 12.7

 

What would you recommend? Some one said to look in to gt4202 it's a 75m with 1.15 wastagate. Someone also mentioned 78m with a 1.15 ar and said spool was quick on a 650 tune. Also mentioned he ran 80m with 1.15 and said he prefers it over 78m. I'm trying to make a combo that doesn't make Jakes that much weaker as 1.32 would do but still push 600hp or even more. Making power isn't an issue I tune my self so I can dial the truck in. It will run 7014 injectors with a 4912 cam It a bk engine pre emission. I already got a 650hp truck with 1.32 78m but Jakes really take a big hit and I'm trying to avoid that it's why I am looking at 1.15ar and possibly adding 5 inch exhaust brake to give it more braking