Lets assume it's a TD4 (because you haven't clarified whether it is or not)
the time in autodata to do the job is 8.4hrs.
I personally dropped my engine and box in 3hrs, then spent the remaining time playing with missing or broken Bits. (read my profile before asking why)
I intend to replace all brake lines, repair wires, change damaged aircon hoses - PRIOR to the engine going back in... so... I'm playing at it..
A1 Clutches in Derby quoted £250.00 for labour alone but, once it's stripped, the garage can have you over a barrel, by saying - it needs a flywheel, or another catastrophic gearbox input shaft failure is about to occur... - or something like that.
Hence me using a mini digger to get the engine and box out, and 30 50mm Paving blocks to hold the body up out of the way.