classic auto air exact fit or universal kit A body 72-76

i have a 1972 dart OE A/C car i took out the OE A/C becouse it wont work with 440 swap the fan motor hits the valve cover i was planing to use it!!! i just bought classic air deal for my car they sold me there street rod set up they dont have A body A/C as a direct fit!!!! but they can put together one that works nice its so tinny. im taking my complete OE A/C to mopars at the strip this week and sell it the nice thing about it is its all there and will bolt right in your A body im even giving them the dash controller i cant use it with the new A/C if your not trying to put a big block in your dart why not use OE A/C i wanted to keep the stock look BUT