I have the CR engine and I'm guessing you have the PD so slightly different but you should get around 35hp. The difference is massive, especially through midrange, It turns into an overtaking dream. I've been caught out a few times when i have gone to overtake a car and come out doing triple figures on the other side.
A good remap should be around 300 to 400 ish for your engine. I would check Sharks website to see if they have a dealer closer to you as i know they have a few down south.