FYI, Manley ran a small run of 383 I-beam rods a couple of years back for Stock/SS 383 racers. I bought a set for a SS 383 I'm building. Jim Hale was supposed to buy all of them but wimped out. They are fairly light at 810 grams and I-beam design like their Pro I-beam rods. Not cheap at nearly $1500. The long rods are a better choice for non-NHRA legal engines.

Floyd Lippencott IV