Not really.
These aircrafts are so cheap and can be acquired from so many countries as used airplanes. When these countries sell their inventory of used fighters, they practically give away their stock of spare parts inventory, because with the airplanes sold , those spare parts inventory is a burden ( i.e. warehousing and clerical costs of keeping track of things). Besides after sales there is no practical use of these parts.
Not only that but also the fact these used aircrafts are purchased so cheap that buyer Air Forces buy extra aircrafts just to CANNABILIZE them for spare parts. This is precisely why PAF bought those used Mirage III's and V's in the 80's and 90's for the spare parts at next to nothing prices.
Just imagine, more than 8,000 F-16 BLK 15 were produced and are sitting in some Air Forces Hangars costing them money to warehouse. They are eager to get rid of these birds becuase they have money to buy brand spanking new aircrafts. These F16's still have a lot of engine hours and airframe hours left on them. I think that is an opportunity for PAF with 3500+ pilots to train and keep current to do this at a cost effective manner.