Volvo Repair: 740 water pump replacement, water pump replacement, book time

Question
Can you advise how long it takes (flat rate schedule and/or reality for a do it yourselfer) to replace a water pump on a 1989 740 (not a turbo)?  Also, any suggestion as to which replacment pump to buy, my parts store has several from including GMB and Hepu.
Thanks a lot/Mitch

Answer
Mitch, book time is an hour and a half, no more than two.  For me, 15 minutes is about average but a semi-skilled do it yourselfer maybe an hour.  GMB or HEPU are good pumps.  I havent had any issues with those.  Stay away from the other junk that is out there.  Roger