Honda Repair: Enginer, honda accord, fuel injector

Question
How can I replace the carburetor with a fuel injector in a honda accord 92. How much will it cost me?
And same question goes for replacing an automatic transmission with a manual.

Also when I open the AC and put to "Reverse" the car is greatly shivering. What is the reason for this?
Thanks

Answer
I have never seen a 92 Accord with a carb?  Not aware that it was even possible. A lot of work and cost is involved in changing the trans.  More than its worth in my opinion.   

The A/C vibration is probably due to either the idle speed being too low or the front motor mount is broken.