RX-Ben

iTrader: (7)

I bought an LS-1 that was supposed to have an LPE cam in it. Instead it looks like it has a GM cam, but I am not sure what. It has laser etching on one end that reads:

1721
S 08
1053

Also, there is an "A" stamped into that end as well and what looks to be a mini barcode.

Any ideas?

Thanks.