I knew a kid changing turbos in Mk4 VWs on his lunch break. He had time to drive home, replace a turbo, and drive back to the shop.
Shop was still going to charge a few hours.
Labour last time I had front shocks and struts done? 3 hours not including the alignment.
Friend's brake job? 2.5 hours - they were 4 wheel disk, what was the mechanic doing for the other 2h?