ive got a t34,
and the bost delivery is very violent,
but i do have positive boost by three, and it peaked at 1.6 (more than i want to run) by 3600 yezsturday in third, and holds that boost till the red line.

its also worth considering that a t34 will make more power than a stg3 t3 at the ssame boost,

go for it aslong as you dont use the car as a daily runner