Dave Ill agree Bosch are total crap.In 30 years at the shop I dont know how many setsI had to replace because they ran like s--t.Peopl pay big bucks for them and total trash.Only say 1 car that ran with them.Oh yeah my kid put a set in a 61 Dodge he had.Only thing he could get at the time.Didnt wabt to start idled bad poor power etc.I got some Autolites i had used put them in and it started super quick ran great and ideled fantastic.Now we run almost all NGKs.Rocky