NFS: Heat - Hidden/unused parts

Requirements:
Need for Speed: Heat.
Stock version of the car you want to swap parts on
Cheat Engine.
Recommended to have a backup save in case something goes wrong.
-Default save location: C:\USERNAME\Documents\Need for Speed Heat "SaveGame" folder.

Dodge Challenger SRT8 bashbar bumpers:
Swap at the dealership before buying the car.
FrontBumper: 2550539398 -> 33773017
RearBumper: 3351906450 -> 46344219

Chevrolet Camaro SS Blower:
Swap at the dealership before buying the car.
Hood: 34954897 -> 57063606
Blower: 6316800 -> 56618696

Subaru BRZ Premium Trunklids:
Swap the stock ID with any of the others at the dealership before buying the car.
SetA 698190028 Stock
SetB 2627393679 De-badged ("Subaru" and "BRZ" text removed)
SetC 819199088 De-badged 2 (Subaru logo, "Subaru" and "BRZ" text removed)

Subaru BRZ Aimgain exhaust:
Buy the aimgain bumper/diffuser and swap the 750$ exhaust with the Aimgain one (all at the garage):
Exhaust: 3343204172 -> 3842723766

Mazda RX-7 Spirit R Hood:
Swap at the dealership before buying the car.
Hood: 2322008050 -> 1584760369

Nissan Fairlady 240ZG hidden exhausts
Swap the stock ID with any of the others at the dealership before buying the car
SetA 648736931 Stock
SetE 3411869991 Dual in bumper exhausts
SetF 1209838852 Dual exhausts

Ford Mustang 2015 hidden RTR trunklid
Swap at the dealership before buying the car.
Trunklid: 4025329074 -> 2797106992