how easy is it to fit a new sump on my corsa?

how easy should it be to fit a new sump on a 99 1.6 x16xe corsa,its been lowered a bit and i find it a struggle to get under the car,is there an easier way to do it and dont say on a ramp or use a pit as i dont have access to this at the minute.the other problem i may have is the sump is also bolted to the gearbox i think and im wondering if ill disturb anything if i undo the bolts and remove the sump.any help will be appreciated ty