ISO P/N 3462049 SBM dipstick. Should measure 16.75" from end tip to stop rib. Prefer NOS. But used is fine, as long as it's in good shape. Not looking for a repop, Thanks
They come up fairly regularly on the FB sites. Check on these pages:
AAR Cuda & T/A Challenger Buy/Trade/Sell
1970 Challenger T/A and AAR Cuda's Lost/Found/Info/Parts Buy & Sell
1970 1971 Cuda ONLY BUY/SELL/TRADE & TALK SHOP
E-Bodies.org
Good luck with your search.
I have recently been down a similar road. My AAR came with a (non-matching) 340 T/A block. But with "X" heads. Instead of the correct AAR T/A heads. I found a set of the correct heads. They were advertised as "ready to bolt on". But without the rocker arm assemblies. They ended up needing to be...