C'mon bro, don't worry about it, replace your plugs with HKS/NGK/Bosch's 4tip plugs platinum/titanium ones (would cost around 5200) get the wires replaced with MSD ones and also add the MSD kit (would cost you around 5k-to-6k; though MSD aint a must; yet the best). One more thing, add butterfly to your air-intake opening for an optimized fuel ratio (hardly PKR500)! Once you are done with these two things that would cost you around 10k, you'd really save around 20K and your vehicle would give you another 15hp to coop with CNG+AC issue and the best; your vehicle would remain as genuine and original as it currently is!
In KHI (Shershah Market) you can get a manual tranny for lancer 96 for around 15-20k, and then comes the electromechanical labour that would cost you around 8-10k. I don't think that would ever be a good idea to ruin your vehicle by paying 30k yourself
Last but not least, Waqas is so looking forward to snatch this beauty from you for a good price, once he does, all your problems will be solved:p C ya soon