I did this job in stages at my school, took a while for parts to come in (you know who you are) but I'd say with everything in hand (no broken studs etc) you could do it at home the first time in about 8 hours. If you have done things similar to this before, maybe 6. I think I could do it again in a fairly short amount of time. The brace that holds up the engine is around $135...if you can weld, you could do this for whatever angle iron costs you...also the design floating aorund here is nice...if you have access to a lift AWESOME, apparently there are alternatives though.
I was told $500 labor here in Williamsport btw....with a decent clutch you're looking at a $900 job...