I have a set of new reconditioned 5.94 rods and a set of std. flat top forged pistons on E-bay right now for a really good price.
I ended up buying a set of I-con forged hollow dome pistons ($400) and forged lightweight rods for mine. I did this because I got a deal on some aluminum heads with 64cc combustion chambers. I sold the LT1 heads I had.
And yes, there are forged and cast 283 cranks. I have both. The cast has the same casting as one one posted above.