Just have to add, my overlooked/"blacklisted" Torque Solutions 75a has been freaking fantastic! No change in the perfect level of street performance in nearly 4000 miles, never had to "settle", has been solid the whole time with absolute minimal vibes and almost complete elimination of wheel hop on tuned stock turbo. I think it's an amazing buy for the $99 I paid that's a perfect amount, just a touch stiffer than the 70a's... just my quick $.02.