I had overall great customer service from SPEC.
They did have one screw up though. I was sold a flywheel which they had not made yet. It was because their onhand inventory was off and not that they wanted to rip me off though.
However to rectify the situation I was given a stellar deal on a Stage 1+ clutch and Flywheel combo.
Also I was not "crunched" for time so I could wait for everything to work out. I ended up getting the setup balanced for free as well.
In the end I got much more then I could have asked for and at a great deal. I have nothing but good reviews for the service and their product.
I have another friend that put a Stage 3 behind a hot LS1 and stock flywheel and it slipped after break in. It turned out the stock flywheel was to blame but SPEC replaced the clutch FOR FREE and sold him their flywheel for dealer cost. That happened well before people here were turned onto to SPEC and is why I looked into them in the first place.
His car is putting out around 460/440 to the wheels in NA form and the clutch hasn't missed a beat.
Yeah it runs 11's... Damn I real power and RWD...