to have enough comfortable room to work. How long it takes depends on several factors: experience, tools available, has the exhaust etc been off before (rusted bolts). First time it took me 6 hours to get the trans and clutch components off as I wanted to bag and label the bolts and take time to remember where everything came from. 3rd time it took 1.5 hrs. On a hoist with air tools you could probably do it in .75 or less.