I need to ask you guys on how to remove engine head, turbo, manifold, exhaust header, and all exhaust piping. and oil pan oil filters fuel filters. also how to on turbo rebuild and new gasket installations for head, turbo, exhaust header, oil pan. should I install longer oil filter? what else should I look into replacing? its 240,000km transmission seems its slipping when its under load for example on highway speed dropping below 100km/h gear slipps.