well ive bought my vr4 a few months back. and every time i dig into it. i find more stuff done to it. after knowing the car has a moroso oil pan ive been wondering if the motor was infact built. well tonight at work it was slow so i pulled in my car and pulled the plus. i put my borescope down and i find that it infact has been rebuilt... the pistons are aluminum.. but not forged. however. i saw the stamp that the pistons are over size 0.50 this has me excited to know that the motor does not have the 175k on the bottom end that the chassis does. however i am worried that with a .50 bore how much more can i go when i decided to build the bottom end with a forged setup. on its current state i will be boosting it to 25psi. as i know it will take it (my laser rand 30psi for 20k miles) anyhow. to really see if the rods are stock is for me to drop the oil pan with a seeping gasket i have a reason to. but im not looking forward to it. however. my question stays... how much furter can the block be bored if its already at .50? and what is the displacement now that its punched 5 mm's out?