I OWN A 96 GT AND I AM VERY INTERESTED IN DOING THE PI HEADSWAP. I WAS CURIOUS ABOUT HOW IT WILL WORK OUT IN THE LONG RUN...IS IT WORTH THE HEFTY PRICE....HOW MUCH ACTUAL HORSPOWER CAN I EXPECT TO GAIN FROM IT WITH THE AVERAGE MODS...ALSO WOULD I HAVE TO RETUNE THE STOCK COMPUTER...ANY FEEDBACK WILL HELP...THANX