Didn't give the year? BUT, For the Normally aspirated 3.8 L36 ZZperformance offers a kit, base cost is $1550 and $300 for them to install, 2-6hr installation time base on your skill level. Stage 1 add 60+hp/60+lb-ft.See link below.
The HPE500 Supercharger Upgrade for a 2013 Chevy Silverado 1500 usually cost about $ 4985.
The cost of the 2014 Chevy Imapala SS starts at $26,860.
10000000000 bucks
about three grand
The cost to replace a head gasket on a 1995 Chevy Impala is between $1800 and $2200. This job is very labor intensive and requires replacing many of the engine major gaskets.
50m 1090$,70m 1809$,and twin cost supercharger cost 2490$
Depending on the condition the price can rang from 500 to 5000
go to autozone.com, they should give you an estimate
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The sensor will cost around $75. It will cost another $75 to have it installed and the ECU reset.
A WATER PUMP ON A CHEVY IMPALA IS ABOUT $20-30 DOLLARS.The cost of installing it should be about 60-80 dollars,i have an 04 impala myself and i had to change mine they usually go bad at about 80,000 miles.
Not enough info. Could be a lot or not. Just depends on the year