Never go for Petal one, These idiot radiator walas can never stop leaks from the petal one. Always use the plastic body ones they hardly develop leakage problem.
Unfortunately i got the petal one and the previous owner was filling water everyday and he was happy but i dun like putting water in my car so i got this radiator repaired 6 times, Yes 6 times and the last time i told the radiator wala this is last time ab main yeh radiator next time leak hova tu tumhara sar main maro ga lol. this time he fixed it and its been 1 month no leakage or water dropping
Coming back to radiator the radiator you need is a 2 fan/2 channel one now i am not sure you can install that in ur current radiator but qabli 2 channel one with 2 fans (insist on 2 fans to get red of heating problem forever) will cost around 6500 Rs.
Can you post picture of your radiator?