I went to the parts store today, and was blown away with so many choices. I have been in performance cars for many years now, and it always seems that one brand of plug seems to work better than another brand.

I'm getting my engine back together, and really need to buy the plugs tomorrow if possible...........thanks.

 

I would look into the NGK variant...
When I replaced my headgaskets I essentially went with a middle of the road spark plugs from the autoparts store while I got everything back together and running. In the mean time, I ordered my 1 step colder plugs from Kyle @ IPP - I think he had the best prices and he had them in stock.

 

Ngk iridium one range colder than stock

 

NGK stock range copper plug. Read a few things about those burning hotter but not lasting as long. For $12 they'll do for me.