The pumps need a boost, i bought the set complete set, i replaced the sump, pump and the front cross member was ready for a cooler. We use the trucks with a lot of stationairy running, so it is for cooling the temp of the engine.
The 88s3 is going to used as work vehicle, loads of short runs like 60 yards to deliver and retrieve catalogs
the 88LW is going to be a tow truck, 2,25 petrol driven.
The regular oil pump or the higher pressure ones can be identified by the bolt, if the bolt is flat at the sides, like a regular bolt head is, it is low pressure, if there is a pressed in bit on all six corners of the bolt it is the high pressure pump.
the low pressure pump is not suited for the oil cooler.
as for the 5 main bearing, it was sceduled for maintenance and before the date of removal the engine threw a conrod, thats why i put in the 3 bearing as war and peace is round the corner