Originally Posted by JARblue

I figured out the recipe for those too lazy to search for themselves...

1 part turbo kit
1 part supporting mods
2 parts money
1 part knowledgeable shop

Take 1 part money, 1 part turbo kit, and 1 part supporting mods and mix them together, stirring occasionally.
Take this concoction to your shop and let it marinate for several months/years.
Once it is done marinating, add 1 part money.
Last step is