Yes you are right, the project can go wrong at any stage due to the negligence of the mechanic and this was the reason I stripped the whole car by myself. Labeled every thing and took photos as a record. At the beginning of each sub stage did consultation with experts and the mechanic too and then headed forward that is why it is taking so much long, otherwise the project would have been completed in two months max.
Radiator
I was actually interested in the fan alone as it was almost brand new and I already had a radiator double compartment type probably used with B16 motor. But the shopkeeper insisted that I should take radiator too as he was asking 2500 for both fan and radiator along with upper holding brackets etc. so I bought the set for 2500 rupees.