Valve lift on 288/280 cams

[grannyknot]

I'm close to ordering 288/280 12.5mm lift cams for my S54, probably go with Schrick but I can't find a definitive answer on whether 12.5mm lift will have sufficient clearance from the stock pistons or if I'll have to machine the valve pockets a little deeper.
I've read "there is lots of clearance" to "it's not worth the risk".
Does someone with these cams installed have a solid answer?
Thanks

[mrgizmo04]

Assuming you don't get the high lift variant (which is 14mm), 12.5mm is standard lift and will not have issues. With high lift you will have to swap out quite a bit, including springs, pistons, etc.

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[digger]

Plenty of people have used 288/280 on stock pistons they are barely different to 280/272 from a p to v standpoint