Got a Perrin rotated GT3076R, would I need the small T3 or the Medium T3/T4?

 

the ptp t3 blankets are fairly small, i have a ptp t4 blanket at the shop right now, i'll take a gander at it and see if that should be the right size. i called in to ptp and the guys at ptp originally spec'd a t3 blanket for the smaller turbo on the compound turbo setup i built, but ended up needing the t4. they switched it out without any price adjustment and got us the t4 size.