Hello all, I am ready to change out the plugs on my 83 EFI. I bought RN12YC Champions to put in it (that is what it says in my FSM and on the rad support), but I found on imperialclub.com that someone recommended RN14LY plugs. I tried to search the archives, as I am sure this has been covered hundreds of times before, but it keeps crashing my browser. Should I ditch the RN12YC's and go with the 14YL? What is the difference? I am not looking to open up a debate of which brand is better, I have my reasons for using Champs, I just want to get the best one. Any suggestions on gapping? 0.048? The car is running better with every mile I put on it for some reason, and I am enjoying the car more than I thought I would. Thanks for the input. William 83 EFI Edmonton, Canada