in the last few days i installed 'a couple' of digitrax decoders. now i even dream of plastic bacs with red tabs... here's what i installed .... 19 dn163a0 in atlas g38 22 dn163k1b in kato sd40/sd40-2/c44-9 56 dn163k1b in kato ac4400 also a few of the older sd40-decoders (dn149k2) have been replaced. these are for sale now. most have the original yellow leds some are converted to white leds. if anyone is interested then please let me know.