Here's my experience and hopefully it will save you the trouble.
Just spent last 2 days installing and then troubleshooting...
Helped my father put on a set of the Granatelli COPS (purchased from Troyer) on an 08 Ford F150 Supercharged Foose.
First off... the are incredibly fragile. When trying to adjust the coil to plug length in the boot, the clips become loose. Also, Granatelli recommends gapping the plugs ~.006 greater than normal. So we did that too with the set of Brisk plugs that we installed about 2 wks ago.
Idled great... but once engine got up to temp and you put your foot in it once to try them out... hesitation... loss of power... rough idle. That was day 1.
Spent the next day pulling COPS and plugs. Thought maybe the gap was too large so we set it back to the original .032 to .034. Also noticed that the wiring connector on the COPS were cracking from the strain of the wiring harness. Yes... all that strain of 2 whole wires. Becoming even less impressed. So, repaired/reinforced the Granatelli COPS with epoxy to fix those that cracked and hopefully prevent the others from cracking.
Tried again... Idled great... then repeat of Day 1.
Thought maybe the ECM needed to be reset due to the High-Output COPS. Disconnected the negative side of the battery and let sit for about 5mins. Reconnected and now there's no... and I mean NO throttle. Idles great but no throttle actuation. Placed code reader on ODBII and reads throttle actuator stuck. I think the ECM has shut down the engine so that the throttle can not actually be used due to some other problem.
So... put the OEM COPS back on... reset ECM again and now the problem remains. No throttle response/actuation.
Was considering putting a set on my 08 F150 FX2 Sport but quickly withdrawing from that consideration. We're still not sure what the problem is... tried all connections, fuses, resets, etc... and still nothing. Dealer is sending flatbed out on Monday to pick the truck up. It's still under warranty but don't know if that means no charge. I'm sure the service department will come up with some reason to provide an invoice.
So... in short... our experience has been less than successful. Also, the orientation/location of the wiring connector to the COPS mount on the valve cover is different. OEM connector is opposed 180 degrees to the valve cover mount. Granatelli's is only offset about 100 to 120 degrees which causes interference on about 6 of the 8 locations due to wiring harnesses, retaining clips, casting(s), etc...
My recommendation is to stay away. Perhaps someone else has a better experience with the Granatelli's that they would like to share. I'd actually welcome the opportunity to hear about a good experience with these as compared to ours.