my engine ran today, first time! pretty
rough, but I used the plugs that came with it.[they all seemed to spark]
my engine was built by Bruce, a 2004 renesis, but I'm not sure which plugs to
use. the rotor housings say "13B". do renesis engines have
that? consequentially, I'm not sure whether I use renesis or rx-7 plugs,
or if it really matters. if someone has some plugs that will work and
wants to sell them , let me know. looks like these plugs run almost
$25/each?