The 09P is the one with the plastic carburetor and if I'm not the 08P uses the same type of carburetor. It basically a ground up Briggs designed much the new 12V300 series that Briggs has come out with.
I probably go and buy the Predator engine Sunday my area. I got a 20% off coupon so it will be $100 without taxes then i will know for sure if it fits the Briggs 8" circle as I got new mower body sitting in the shop where the customer threw a rod in the 09P because they because they didn't put oil in it.
This should give an idea of the 09P602 looks like.
09P602 IPL