does anyone have a used aftermarket air intake that will fit the 3800 series for an 03 pace car and does anyone know how to make a homemade air intake

 

There are tons of threads around on how to make your own.

We have a W-Body, so the instructions are the same for a lot of vehicles, grand prix, impala, regal, etc.

With that said, if you were to purchase one, here is the best one: Easy Performance - Wizaired Cold Air Induction System #EP-CAI

 

either that or ZZP's CAI, I like their design a little better.

Also, if you want to make a cheap one build a FWI

 

fwi means?

 

Fenderwell Intake.

Basically you run a pipe with a filter into the fender and out of the engine bay and away from heat.