Hi,
This is not an item I am associated with, but thought I would post. Maybe Barry has it in his registry.
I saw this on Allpar

Extremely rare AAR ‘Cuda engine, Serial # OB3020_8, block# 3577130.T.A 340.1 including rebuilt T/A heads # 3418815, new .030 over pistons w/ new rings,timing chain, original oil pan with windage tray,new purple stripe cam, forged steel cranks [quantity 2 = original 303.4 ci and 340 ci PN 2843868]. Professionally machined and fitted. If you have an AAR ‘Cuda, or T/A Challenger but need a matching motor, this is it. Make offer
Matching number 727 trans with 3500 rpm stall speed torque converter. Make offer

Missing VIN digit, so multiple AAR possibilities. Can the seller get a closeup photo of the block & transmission VIN pads?

New Purple stripe cam + going the cheapest way possible to do the rebuild, No GOOD
Do really want a cheaply rebuilt motor in any AAR

This was posted
https://www.allpar.com/threads/aar-cuda-engine-and-trans-3577130-t-a-340-1.243978/#post-1085348964

no price, no full VIN.

What's wrong w/sellers these days?