Recently fitted same st41 kit to my Eddy, standard 18" Pescara. Hassan at Awesome v helpful.
No spacers needed. About 3-4 mill clearance on the face of caliper, to inner face of wheel. Tight, but all fine after 1500 miles and an MOT! More clearance on circumference, but could not really go bigger?
Quiet, no squealing at all, and no hum, even on mway.
Easy fit, good instructions, seems all good quality. Very well packed. Everything provided.
Calipers are 4 pot alloy, split type with a bridge piece bolted in over the pad aperture to stiffen up. Differential piston sizes, approx 36 & 44 mm.
Unfortunately i forgot to weigh, but the reduction in unsprung weight was readily apparent at the steering wheel! Calipers more than compensate for slightly bigger disc.
Brackets are alloy, with steel helicoil type inserts. Goodrich stainless hoses.
Discs 1 piece, vented, grooved in my case. 328 x 25. This was recommended by stoptech for fast road. Drilled also available.
Street Pads are those recommended by Stoptech. Style D608.
Got my system fully purged with VAGCOM on the ABS, after fitting.
Stopping power much improved, but i can only relate this to the standards fitted previously. I never got my used 996 kit rolling....
Stoptech Feels v adequate for my stg 2 on the road. Improves when warm.
Regret wasting my money on ebc red stuff pads and new oem discs 20k ago! They have lasted well tho, and can go back on when car sold.
Also regret wasting a lot of time, and more money on a used P 996 kit! Was never going to be a success with Pescara's.
Summary. Delighted. Only downside might be the lack of a Porsche badge!?! But then i can always borrow my brothers 911 targa???