This table will help you source the necessary hoses to that will need to be replaced. It is incomplete, but I think I've got the hard ones taken care of. I also favor Toyota constant tension yellow zinc hose clamps. They are just awesome. 
 
Hose and Clamp replacement
N9TE/A engine
Peugeot Part # Peugeot Desc American Desc Front/Left hose outer dia. (mm) Rear/Right hose outer dia. (mm) Replacement hose Toyota Clamp # (front or right) Toyota Clamp # (back or left) Notes What to say to Toyota counter parts guy
1341.11 Water tank to water pipe Thermostat housing to water pipe 26 26 Gates 19607 UPC 0 72053 17839 5 96112-10250 96112-10250 Use Toyota clamp on both ends I need the clamp that goes from the heater valve assembly to the hose that comes from the head on a 87 Supra turbo.
1341.37 Water return tube to water pump Water return pipe to  water pipe 32 33 Don't know.  I think I got the last Peugeot hose from Brian Holm.    
6459.54 cock to aerotherme valve to heater core UNKNOWN - Haven't replaced this yet
6459.60 water tank to cock thermostat housing to valve 24 27 Gates 18075 UPC 072053 17813 5 96112-10250   Original Gates application way too long I need the clamp that goes from the heater valve assembly to the hose that comes from the head on a 87 Supra turbo.
1341.30 aerotherme to water return tube heater core to water return pipe UNKNOWN - Haven't replaced this yet
1351.16 Hose, lower radiator N9T 86> lower radiator hose 39[1] 48     turbo cooling line OD 19 mm  
1343.78 Hose, top radiator N9T 86> upper radiator hose 41 49   turbo cooling line OD 20 mm

[1]
The front hose dimensions (39 lower & 41 upper) should be accomidated by upper radiator hose clamp of 2000 4 cyl Camry.