rods are the most important part of any build for FI or Spray. cheap out on pistons and crank with the proper tuning can be OK but rods take All the force. h beam forged or dont bother. the extra r/s angle of the 383 will snap a PM rod under N/A power. and make sure its a 6" rod. 5.7" rod on a 3.75 stroke has an r.s of 1.52. Very bad for piston wear longevity and 6500 rpm will be about the limit. 6" rods are hard to find as a "KIT" for a 383 wich is why they sucked when i was looking. 6" rod on a 3.875 (396ci.) r/s is 1.55 may not seem like alot But makes a Drastic difference in engine performance at low to mid rpm.
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1998 Firebird:buncha parts thats used to make it go fast..... not so much anymore. 
BAAAAAA!!!!!!
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