i have to agree with DJV. i have been in his car with the efi and also another friend that put a single set up on his big block. holy cow, the difference in how smooth they run, the power, and drivabilty is incredible. no doubt you can get a carb close but you'll never get it dead on like injection. just way too many changing weather conditions for a carb to have a perfect mixture all the time. i'll be saving for a fast ez efi set up. those two cars made me a believer. i thought it was kinda expensive to do but the results were worth it in my opinion. i guess it depends on how much you drive your car too. someone that just cruises to local events it may not be worth going efi. but for someone like me that likes long cruises and often long cruises its definatley worth it in my opinion...