When I replaced the cracked intake manifold I could see the stock 19# injector spray patterns in the intake ports from the carbon deposits. The injectors are 19 years old now on the NPI engine. I could see good cylinders and some patterns that did not match. Reading this forum I learned that the stock Bosch type rarely fail and just need to be cleaned. The price for new real Bosch injectors is eye popping. I start searching and everything is made in China, copies of the pintle type Bosch. I check Ebay and the first one up is a set of new Lucas disk type injectors for 179.00 for a set of 8. Lots of reading on the web about the Bosch pintle VS the Lucas disk later..... The Bosch lasts longer but degrades over time,the Lucas is faster to respond because the disk has lower mass to move compared to the Bosch pintle. So I buy a set the the Chinese Lucas, 19#, shipped from China on Monday and got to Maryland this morning by US Mail. The fit and finish is good and came with new top and bottom "O" rings. Started the car and it is idling much quieter, driving was nice and smooth so no complaints. Now, can anyone tell me where to send my Bosch injectors for rehab?