I've not used the likes of ATS r Quick fit for years and never will, from my personal experience they offer poor customer service, and are not the most cost effective. Now I wouldn't have such an issue with them if they hadn't decided to go over my car at the time and try tosell me things that were not needed or required.
Personally I prefer to use small independant businesses and support them.
oh and I have one of smaky's openair engine builds, and can vouch for his good work, since having it back its been driven with throttle either on or off
The Car in front is my crumple zone
UNDERSTEER is when you hit the wall with the front of the car
OVERSTEER is when you hit the wall with the rear of the car
HORSEPOWER is how fast you hit the wall
TORQUE is how far you take the wall with you