Looks like it's time to replace the manifolds and risers in my 382 Fastech. Question one is what is average cost of these part if OEM is used ?? Second, what's average cost to switch to an aftermarket header as well as pro', con's, and cost ???

This is also a salt water boat too. Thanks, SJ

If you want to go with stock, I have a real clean pair (1 motor) Freshwater only (lake boat) stock for a good price.

Which Engines do you have?

Big difference in recommendation if they are black or blue.......or maybe Volvos.

Black engines. ��. 502 Mags.

EMI or Stainless Marine work very good for the $$$$$.

Ditto

If your exhaust manifolds have corroded from saltwater and you do not have a closed system you better check your intake manifolds under the thermostat housing, if cast these also corrode away and you will not see it until you fill your block with saltwater. I could put a small screwdriver through mine with very little pressure.