Its Works On Simply "Replace And Check" If You think Kabariya Will do then ur mistaken
the CR tested method i recommend is to save time cost and khuari of taking here and there specially if ur planning to buy engine from one city and have it swapped in other city and with 3rd party mechanic...you are in spin if even a single thing skips or mismatched by kabariya ..... its to save that khuari...
i am a victim of such cases (i swapped dozen of engines before w.o checking CR and they worked fine also) but one didn't ..physically engine was clean as low mileage....upon swap and start....CR of 2 cyl were below 100 due to some reason!!
from that day i never recommend anyone to swap it w.o testing CR...rest its happening on physical inspection on daily basis and ratio of faults vs perfect working engine are 30/70....
90's engines are getting rare now and w.o inspection its a chance and risk..
newer motors are in ample and u get lucky and more chances they work 80%
its personal preference of people to do as per liking.. advice is something one can give. rest of following is upon user as per convenience.....
swaps are done differently in every city.....KHI pindi pesh queeta.......some can do it in 1 day but thats just a running car with spinning engine....
Our advice offends many on forum and PW's lately that's the reason we keep ourselves away dont post anymore topics and keep our advice to ourselves usually... 
