These are forged rods and pistons for a 5.7L LS1/6. The downside is that these are not a common length Rod used in LS1 stuff, so they wont match up with a lot of the shelf stuff out there. The good news is, these Rods and Pistons are a matching combo.
Scat H-Beam Forged Connecting Rod
6.100" <----(not as common as the 6.125" length, but match these pistons)
.927"
ARP 8740 bolts
Probe Forged Piston
3.905"
13.7cc Dish
.927" x 2.50"
The Rods were used in my 900HP Application without fault. The Pistons were take-outs after I went to Iron. The nice thing about the Probes is that they have a thick top ring down, especially for a shelf piston, which is something your really want in a boosted motor
with 69cc heads, and .041" gasket, i believe these achieved 8.7:1 SCR
looking for $400