Yes, engine bearings are becoming more and more difficult to find. I have hundreds of sets on order from anything from SBC's, SBF's, BBF's, Mod Motors, Coyotes, LS's, RY45's, FR9's, SBM's, Hemi's and even Flatheads from several different manufacturers. Almost no one just stocks anything these days.

1963 Belvedere 440 Max Wedge Tribute
1970 Charger R/T S.E. 440 Six Pack
1970 Challenger R/T, 528 Hemi
1970 Charger 500 S.E. 440 4 BBL
1970 Plymouth Road Runner 383
1974 Chrysler New Yorker 440
1996 2500 RAM 488 V-10 4X4
2004 3500 Dually Cummins 4x4
2012 Challenger R/T Classic.