Pahabol, kaya malakas ang lamig ng nissan calsonic (like the frontier with the TD27 engine)....the condenser is very large (parang 24"x14") at manipis....so madaling palamigin.

Kung nasa harap sana eto, the power of the fan and the radiator fan will produce enough air movement to cool it. Since nasa ilalim, baka hirap ang fan lang (lalo na't half lang kamo ang covered).

Another thing would be the evaporator design (I suppose malinis pa rin yan)...kailang hindi constricted ang air movement going from the blower.

The air blower should also be strong enough to make the air movement (new designs ng aircon blower mas okay kaysa dun sa mga luma- 70's style).

Ang stock compressor ng TD27 is the big series na kasi wala naman TD27 na sinalpak sa maliit na sasakyan...IMO it should be more than enough. Comment din ng aircon tech na suki ko nun nakita niya ung sa frontier..."kaya na nito na maglagay ng isa pang aircon set-up sa likod (camper) ng pick-up, but you'll need additional condenser and evaporator set-up"....so no need to upgrade the compressor.