mixed injectors

was removing my turbo today to clean and wanted to check out my injectors just to see what i had i bought used a year ago it has 430XXX miles. truck runs good bud when i pulled my vavle covers i noiced was every other injector was AD AB AD AB. my question is it ok to run like this and what the differnece is. thanks for reading

Chances are, with that many miles, that someone had them rebuilt at some point. Builders will reuse whatever bodies they get an that's why there mix matched. If your truck is running good an not throwing any codes, then I wouldn't worry about it

Man they really drove the living *** outa that thing didnt they, 430,000 is really impressive