sbcmaro,, if it runs fine leave it with projected plugs.. DON'T USE A POWER ADDER WITH PROJECTED. know that you have the timing marks right put int timing at 20deg and total at 36-38.. have it all in by 2500ish and make your last carb adjustments... i run all my smallblocks with the timing locked out and the timing set at 36-38 on a 350. the reason i say 36-38 is because every engine is a little bit different. only you or someone that can read plugs well can make the final call on timing, heat range, jetting etc. good luck