RB block, Trickflow 240 heads, about 10.5 to 1 CR, roller cam, TTI 1 7/8 headers, 512 stroker kit, CD ignition, fuel injection, 91 octane gas, use mostly street, some street racing, once or twice a year drags and even autocross. What brand of spark plugs and part numbers do you recommend????Thanks everybody.

NGK 6987 is what I use. It is an OEM plug designed for fuel injected engines with that compression ratio.
https://www.ngk.com/ngk-6987-zfr6f-11g-v-power-spark-plug