Sad, but so true Grumpy, seen it waaaaaaayyyyyyyyyyyy to many times!
I was going to comment earlier on the HP numbers. A well built 383 will net 400 HP being NA. Under boost, I wouldn't be suprised if you get 550 horses at around 10 psi. I would expect 500 HP from around 7 to 8 psi. But that is my opinion.
Back in the days, grumpy can remember I'm sure, aftermarket rods were a luxury item that cost alot of $$$$. Hank the crank was the primo crank manufacturer and carillo was the rod man to beat. A set of sbc rods would back then if I remember correctly set you back $1500 and so would a crank!
Not so today, Eagle cranks can be had for around $400 and rods for $350. Cheap insurance IMO when coupled with a 4 bolt block and ARP studs.
If you ever get the chance, buy a set of JE pistons and eagle rods. The pistons rarely require any balancing and are spot on dimensional wise piston to piston, real quality pieces to say the least. I have carillo and Eagle rods and both are fine pieces with the carillo having better quality and higher HP rating.