part numbers to identify a bellhousing or exhaust mamifold

[70daytonaclone]

Hi everybody just need a little help identifing these parts.bellhousing #3743859 and exhaust manifold #2843992-2 thanks  plus and web page that can decode other part #s Stephen

[Troy]

I use this site a lot:
http://www.mymopar.com/tools.htm
Your exhaust manifold is an HP part from a 68-69 383 Magnum or 440 Magnum (they used the same ones).

For the bellhousing I looked here:
http://www.autohobbydigest.com/tables.php?04_Bellhousings
It says "LA A-833 10.5, 11 clutch 1974 E-body aluminum" - basically a small block bellhousing from a Barracuda or Challenger from 1974.

Troy