I've done considerable research on upgrading to a KO4 but have not found any recent posts about how these setups have held up for people. In 2012-13 some have mentioned that they have 100k miles 'and going strong'. I want to keep this car into 150k-200k miles (currently at 64k). Can anyone comment on long-term reliability of KO4 setups with the proper maintenance and relevant upgrades (hpfp, intercooler, exhaust, injectors, etc.)