Performance upgrades for a stock BBC

[Commander21]

I have an 88 Commander 21' with Berkeley jet and a bone stock 454. I dont wanna do anything to the motor except for the following:
Electronic distributor, new headers, intake manifold and a few upgrades to the pump: Place Diverter, droop snoot and that's it.
What kind of performance do you think i'll get out of this? I currently top out with about three in the boat at close to 55 MPH.
Thanks

[jbone]

Maybe 2-3 mph.
For every 1k you spend, you will see 1 mph gain. lol.
J

[Commander21]

Yeah. I was reading your reply on another post earlier and thought to myself, 55 is pretty damn good. lol