The gt3071 is about 450/460 ,the td05 is at 430/440 both turbo are maxed out on pump fuel(v-power).
I know a gt2871r will not hold more than 1.6bar at redline and a gt3071 will hit 2 bar ,if it was my choice between the two i'd go for a gt3071r with 0.63 ex housing on a 1.8t. I think the td05h 16g6 special i have on my car above is probably far superior too both as far as a road car goes but there is no standard rotation and scroll in that format unfortunately.
I know a gt2871r will not hold more than 1.6bar at redline and a gt3071 will hit 2 bar ,if it was my choice between the two i'd go for a gt3071r with 0.63 ex housing on a 1.8t. I think the td05h 16g6 special i have on my car above is probably far superior too both as far as a road car goes but there is no standard rotation and scroll in that format unfortunately.