FYI those are NA-HD part #s . SM uses the NA billstines on both the NA and NB.200 shipped for NB billies from a spec car, have one season on them ~15 weekends. Thoughts? Come with two FCM bumpstops.
Seems reasonable to me. Then I spend another 35 bucks on two more bumpstops, 120 on sleeves/collars, ~150 on used springs, and then figure out the top hat situation.
Edit - 24-014892 and 24-014885 are the two part numbers on them. They appear to be in good condition with no signs of leaks in the pictures anyway.
general consensus on this thread is to use the NB variants. Personally i'm going to run the NA-HD and see how i like them.