Total order are 1674 , wiki article is inaccurate & indian T 72 are not the same T 72B in Russian service.You need to check out new Eramk2 upgrade
It's Engine is already being upgraded
Currently 2040 T-90S 'Bhishma' ordered which were procured in 7 separate orders
In 2001, India purchased 310 T-90S tanks from Russia, of which 124 were delivered complete (42 featured the early cast turrets seen on Russian tanks) and 186 were to be assembled from kits delivered
Second follow-on contract, worth $800 million, was signed on October 26, 2006, for another 330 T-90S
Third contract third contract, worth $1.23 billion, was signed in December 2007 for 347 upgraded T-90Ms, the bulk of which will be licence-assembled by HVF.
Fourth contract ₹10,000 crore (US$1.4 billion) purchase of 354 new T-90SM tanks for six tank regiments for the China border was approved.
On 17 September 2013, India's Defence Ministry approved the production of 235 T-90S tanks under Russian licence for $1 billion in HVT
7 th contract On 11 November 2019, India announced that Heavy Vehicles Factory will produce 464 T-90S MBTs