[db2022cs]

I reached out to a pretty decent shop that does a lot of Chevy work and is pretty reputable. I was looking to have long tube headers, flex fuel kit and a tune done to the car, they provide all the parts. They went with Kooks 1 7/8 with green cats which is about $2700 right there alone. Everything else came out to another $3200 bringing the total for the work and tax to $5900. The same shop quoted me $12100 for a 600HP package that includes engine removal, cams, heads, headers and tuning.

Is $6000 fair for headers, flex fuel and tune and parts/supplies? I have the quote below.

2260H430 1.00 2761.00 KOOKS 1 7/8 HEADERS WITH GREEN CATS 2016-UP CAMARO
33829 1.00 137.99 MSD WIRESET LT1 14+
4344 8.00 109.20 NGK IRIDIUM SPARK PLUG
12657093 2.00 34.04 GM LT1 EXHAUST GASKET 2014+
DSXFLEX 1.00 375.00 DSX FLEX FUEL KIT- '16+ CAMARO SS
LABOR 4.50 607.50 Install Headers and connections
LABOR 2.00 270.00 Install Flex Fuel kit
LABOR 1.00 850.00 Dyno tune (E85)
6452 2.00 184.00 VP C-85 5 GALLON
1.00 266.00 Supplies

5972.84 Total with tax
Kooks headers are great headers are great, and that is a huge cost. If I could find something for half that cost and get them ceramic coated, I would maybe be happier. What is the difference between the green cats and high flow cats? Are the green cats just what Kooks calls the high flow cats? I could knock off another $270 and install flex fuel myself but I think they have a 12000 mile 1 year warranty if they install everything. What are the thoughts here? TIA.