Pulley Setup for 340 Assembled 4/20/1970?

I have a 71 Duster that I am putting in a 340 in that was assemled on 4/20/1970. Would that 340 have been in a 1970 vehicle, or a 1971 vehicle? It is a no A/C, and no power steering car. Can someone tell me what pulleys and how many grooves? I have searched and searched these forums but can't find the exact answer. Pictures would be greatly appreciated if it is not too much trouble. Thanks!

Andrew

Most likely the motor was in a 70 model.
With no A/C or power steering it would of had single groove pullys.

http://www.cvfracing.com/Chrysler-Small-Block-Pulley-Kit-ALT-p/scre1kit.htm