I called TSP this morning and the rep I spoke to is insistent that the 5456 will work because of their cam. I tried to explain to that Comp Cams paper work says it's for 07-08 engines but he was tried to ensure me it'll work, I then told him that Comp Cam has the 5460 that says it's meant for 09+ but he told me that the 5456 will work. I'm on the phone with Comp Cams trying to see what they will say (been on hold for 35mins now).
I'm not to sure if I trust what TSP is saying.
I just checked my invoices and tsp has been supplying and me using the 5456 with their camshafts.
From what I can figure, the older camshaft Phaser has a different range of motion than the 09 and later Phaser, that is why there are 2 different numbers for the 07-08 and the 09 and up limiter kits.
It seems like when tsp developed the cams, they used the 07-08 style limiter inside the newer style Phaser in order to limit it.
You should for sure use the 5456 they supplied, if you use the 5460, I think it will be off on the range of the Phaser.
Sorry for giving you bad info earlier, the use of the 5456 seems to be built into the camshaft design, even though technically the 5460 with a stock based cam design would be the proper one. Quite confusing.