Outer Limits 4x4 Board

Hi , my 2.8 GU 2.8 Patrol made some weird banging noises under the bonnet , on inspection I found metal in the oil filter , I do not want to rebuild again so I could use some advice on what motor would be a economical replacement , petrol or diesel does not matter , if anyone has done a replacement with a Skyline or v8 please give me some info
Thanks

Which motor ? What do you want it for ? When you say economical do you mean to run or convert.
Cheapest conversion will be swapping in another nissan patrol engine.
I have run rb30 not a bad engine but underpowered for a patrol, can be turboed reasonable cheaply. Good offroad torque could be tricky to obtain. gearboxs are not the strongest could cause trouble if you are not careful.
I pulled out the rb30 and fitted a Tb48 engine fairly easy coversion other than wiring. 200hp easily great torque lots of power upgrade if you choose. Drink fuel like its going out of fashion. 18litres-24 litres per 100km.
Fuel cost too much so I bought a TD42 gq ute for work. Nice power more than the rb30 and lot cheaper to run 10-14litres per hundered km plenty of options for power up.
Rb series engines will bolt up to your gearbox would make for a very good hoon machine not sure how good the engines would be for 4wd work.
Chevy V8 would be very nice could get exspensive to fit and run.
Good luck