Anybody using the R5/P7 for racing?

Now that I have the chassis for it I'd love to build a P7 engine but funding is limited at this time and probably will be for sometime to come. Good luck with that though. I believe the Pro Stock trucks (now running in Comp Eliminator) were making over 1000 HP or very close to it. Unless you plan on running in the 7's there may be cheaper alternatives. How fast do you plan on going?