Hi
What are the options for bigger radiators to help colling now the temps have gone into the 40's
Station-rat

you dont need a bigger radiator. If you have a cooling problem chances are the one you have is partially blocks, thermostat is playing up etc.

for the tranny of the engine?

i would check the simple stuff first. get the radiator cleaned. or new ones are cheap these days. no s**t between the condensor and radiator. also, give the trans its own separate cooler, and don't run the oil through the radiator. you will be suprised the difference this makes.