sharo - the SPAL is oem to car brands like Ferrari and Maserati and a number of European truck and buses, ask for SPAL radiator fan in the market - it will only be available at a shop thats selling fans - you would have to confirm its 12V and pulls air if you want to install it behind the radiator and pushes air if you want it infront. They dont work efficiently if their rotation is reversed
Their are varieties, regular straight blade, heavy duty straight blade (loud as hell) and heavy duty curved blade (quieter)
Pearl
I dont have a picture of the ones I have in Karachi but Ive showed a forum member Dani80pk its performance, They come in all diameters and the 13 inch one fits easily - the shrouds have slots where you can insert 6mm bolts to clamp the metal braces to the radiator or car itself. Other good brands are Bosch, AEG and Gate but its very very hard to find for your application, These is OEM to MB, BMW and VAG vehicles (my VW Golf uses a single 10 inch AEG 400W - 5 blade, 2 stage cooling fan) Your mehran has a 140W cooling fan, which is cheesy IMO.
When installing in your Mehran use a dedicated relay setup to run them with heavy wires both on +ve and -ve, the -ve should be wired direct to the battery and every wire should be soldered, you can also use two relays to activate it to divide the amp load, and use a bipolar 0.47uf capacitor on the fan connector to suppress noise.