I read some were that the early LT1s had forged connecting rods until about early 94 then they changed to the PM rods to save money. I have two LT1s that were build in 11/93 that came out of 94 Z28s. Is this true and how can I tell if these are the forged rods for sure? Thanks for any info. I did do a search and didn't come up with anything.