A/C Compressor Swap

I have a 65 dart Convert. All the inside parts are factory 1965. I have a 5.9 Mag engine so I have the compressor for a Dodge Dakota. The 134 expansion valve and condenser are Classic Air units, which I think the condenser is too small. Custom hoses and its all hooked up. I'm not sure if it's just because its a vert or not, but I'm disappointed in the way it cools. Wish I had used an after market evaporator.
Just my 2 cents.
easyrider