http://www.racetep.com/turbomatrix.pdf

one thing i find interesting is that it doesnt recomend an .81a/r tubine housing untill 1000hp for both 3 and 3.5l engines untill 1000hp

@500hp it only recomends a .58 for the 3.0 and .68 for the 3.5

 

Cool find... can't say I agree with some of their figures, but cool find none the less. I saw a 1.31 A/R T4 on a VG 3rd gen today, he said he starts seeing boost around 3000rpm (totally custom manifolds done by himself, from the exhaust ports to the muffler, very very nice work he did).

 

im happy with my .63 its been spooling at 4000