Im not sure but I think you can go to 8 in on a 2007 model and not have any warranty problems. I am guessing you have a manual jackplate on the P 4 now and want to go to hydraulic.From what Ive seen, and people Ive talked to, Bobs jackplate would be my choice. My brother is using a Bobs on his 2016 Puma and just installed 2 of the Talons on his rig.Ive got an older boat that I put a Detwiler on so my info is from other sources.