Valve relief depth, stock 10.5 to 1 v/s cam lift

I'm using a stock 10.5 to 1 piston and wondering how the valve pockets compare to a replacement TRW piston in depth. I'm hoping to run a 540 lift cam and wondering if the stock valve pockets are going to be a problem. I know duration plays a part. Just wondering what people have gotten away with with the stock slug. My heads are not an issue, previously set up for 600 lift. Piston is .025 out. If anyone has a TRW laying around and could measure depth of pocket, that would be helpful. Thanks!