A-7 850 wrote:
its all in the original passport to service booklet that came with the cars from new ,those times quouted in my experiance would be ok on a newish car as per factory but on an old car thats been messed with wrong or missing parts

those repair times could as much as double

in some cases with all the mucking about you have to go through to get it right ,hope this helps

Couldn't have said it better myself. I recently swapped my hydro displacer's from front to rear and one of the fronts took me about 45min to 1 hour to remove from the subby. This displacer had never been removed before and was well and truely stuck in. Back in the day I wouldn't think it would be stuck in like that.
I spoke to the local bloke I get parts off of and he says many people don't realise that sometimes jobs on old cars can take longer than expected due to nuts/bolts being rusted in etc. Not really a worry when you are doing it yourself though.