I am having big problems with my 06 WRX. I am 99% sure I will need to pull the motor. I believe it's the head gasket or seals or something. If I was to have work done, would it be cheaper to buy a rebuild kit for the shortblock, or to just buy the shortblock its self? Obviously I would like to go forged internals. I've been doing a lot of research, but I still don't know what I would need to get everything back together like new without having to do too much extra modifications. Any help would be greatly appreciated.