Turbo back will get you the most performance gains but will also cost more. Diff back will basically just be a canon attached to your stock exhaust from just behind the rear axle. Places like vision r, evolution r, nengun, carmodsaustralia or ultrex would be a good place to look. They'll come up on google.

Detailing I hear OCD detailing are very good but bit of a wait to get in.

Do you want more power or it to handle better ?

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