Right now im running ngk brk7e i went on sparkplugs.com and i found a DENSO double pkatinum plug with a heat range of 20 which ic a colder plug then the ngk at 7 so would this be a good plug for us to use part number is 3245

 

I've heard that platinum plugs are not good in our cars. I heard that the our engines blow the tips / platinum off of the plugs. I think it was a guy from INTENSE that told me that.
The plugs you have now are the ones he reccomended and are the ones that I have. There is also an Autolite plug he also reccomended, but I forgot the part #.

 

You do not need to go any colder with your plugs.

1-step is cold enough for your setup.