Heinz
I used the Aero set up end to end - yes you can buy the individual parts but I decided that if it all came from the same place- they were responsible for it all working.
Ultimately it ended up at Omex who finished the job off. I did once post the before /after graphs but they went with photobucket and when I sold the car.
Don’t buy throttle bodies with a torque increase as your primary ask. Buy throttle bodies to enjoy more top end power, a fabulous sound and a bit of improvement in torque ( over 3500 revs)
Just remember that with an extra 50 bhp- things like Panhard rods, better tyres, shocks and maybe negative camber plates really help use the extra power.
If I bought another 4/4- I’d do it again.
It fundamentally changes the car