Hi, I would like someone's help on Spark plug replacement
for my 1970 Cuda with stock 383- 4speed
*Engine was kept stock, and just freshend up..
I have 2-options from my understanding: Champion plugs or NKG OR ....?

If you have replaced used on your car the 2-brands of Spark plugs,
Which ONE would you recommend??
Based on your experience or other name brand of spark plugs ...please give your opinion !!!
I would greatly appreciate your guidance!
Thank you so much!
Mopar Sunny