340 x-block vs. 410 stroker ?

I had the moparperf chrome box for 10 years, ran good, 12 seconds, but when going slow in street traffic coils would overheat and quit, as mopar said would happen. stepped up to the accel 300 box and coil-started better and more snap, and no resistor needed, and has a rev limiter. accel coil died after 1 year. msd coil now good for 10 years. 750 440hp avs and now 11.7 street and strip at 3040 pound vehicle weight thru edelbrock 2.5" muffs