I called around to a lot of the places that advertised rebuilt 300zx injectors. The price seemed awesome. However, I found out all that advertised rebuilt did not have them and no longer carried them. They each said they had too many problems rebulding them b/c of the plastic casing. It's too brittle w/ high failure rate. That was the story I got, right or wrong. I then bought new from BBB Automotive/Moog Chassis parts for $120/ea, total $706.40. I have had no complaints. They work great. The page is: [ www.a-1injectors.com/inj/nissan.htm ] if interested.