Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: MagnaFlow 16471 Large Stainless Steel Performance Exhaust System Kit
Product description: MagnaFlow Stainless Steel Performance Exhaust System.
Product feature: Straight through mufflers, Mandrel bent tubing, Stainless steel construction, Dyno-proven power
Product price: $901.38
Product brand: MagnaFlow Exhaust Products
Target attributes: Type
Answer: attribute: type
value: None
source: None