i personally went the brand new yellow jackets for my 32 GTR
havent installed them yet,
my mechanic said that he hasn't had any problems with them yet. they do the job.
my stockers arent having problems just yet, but its an 89, and i dont know how long they've been in there for? could be original ones for all i know?
it depends on your budget, if you wanna spend the extra $200 on coilpacks and probably not notice the difference then go ahead, but i'd rather save it for something else.