What do you think of this spark plug as a replacement plug?

I replaced my stock spark plug with a Champion J8C spark plug that I got from tractor supply company. Is this okay to use? The engine seems to run pretty good on it..it's really hard to tell..so basically has anyone else used this plug on either the 48 or 66cc 2-stroke kits? Let me know! Thanks. The heat range of the plug seems to be 8. My stock plug is an LD Z4C(no idea what the heat range is). Tell me what you think.

Thanks for the opinion! It seems to run okay with it in there, but I haven't really FULLY tested it yet. But seems to run okay. I run my engine rich between 6-7 oz of oil to 1 gallon of gas.. My friend Lynn runs hers 16:1(8 oz to 1 gallon) all the way through. Smokes a bit but not excessive I'm going to by some smokeless synthetic 2 stroke oil.

I've run 32:1 and maintained the motor well and it ended up seizing...but it wasn't mine the entire time it was owned a year by someone else before me I purchased it on a bike in non running condition the guy also bought it from kingsmotorbikes ha..go figure.(needed a head gasket and some other TLC)(I've built many of these bikes) and since that happened that one time and they're made so cheaply I don't take chances anymore. Alot of other people I know run the same mixture I do, as for fouling..I am aware of those things. I can try 24:1, I was planning on buying some synthetic oil. I've used "Weed Eater brand, Briggs and Stratton, there was another brand too but I forget what it is now)