Popular Mechanics has a guide on their website entitled Junkyard 101: How to Find Cheap Car Parts. Additionally, Car Craft also has such a guide, entitled Junkyard Engine Spotter's Guide, which focuses on cheap car engine parts rather than overall car parts.
Definate cheapest way would be to find your parts at a junkyard, or you can try ebay.com or craigslist.com
at a junkyard
There are several websites that boast cheap salvage parts. Another option is to visit your local junkyard. The owners will be able to tell you if they have the part you are looking for.
eBay, advanced auto parts or junkyard depends on what ur looking for. if its body parts a junkyard you can use parts from 81-86 they are all compatible
http://www.mavericksclassicparts.com/free-auto-parts-quote
Parts store or junkyard
There are a number of options available for one to find Puch Moped parts. One can find various parts on sites such as The Moped Junkyard, Treatland and on eBay.
I would try to find a Whole suspension from a local junkyard. This way you will have everything you need and will save lots of money in the possess. Or find a damage front end Ford Expedition cheap this way you have everything you need and more. After getting what you need have a local junkyard take it off your hand...
Purchasing your vehicle's replacement parts can be costly. New parts will cost a lot, and the labor required to mount them adds on to the total cost. Luckily, you will find used car parts that are less costly in a junkyard. Yeah, for decades some people used junkyards as part of the bins!Junk dealers purchase complete vehicles still functional and job parts to sell to the owners of cars for less than the same price will cost new ones. Occasionally a small entrance fee is paid to the junkyard, but you can search for all cars you have to buy. Anything you find that you want to keep, but these parts are a lot cheaper than brand new ones, you’ll pay for them. The best thing about the junkyard is that you will find parts that were never used, for example for new cars which were in accidents but could not be fixed.Remember, bear in mind that you have two simple choices when visiting a junkyard: places where you remove the part yourself and others where they remove the part for you. While a junkyard that does all the work for you is easy, it could be more costly to buy apart from them.
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Get onto the tech-no tool. Next go to every electric thing that you can find. Soon you should find a trail that will come to a mansion that turns out to be DR.F's lab. On the way you will find robots. You can take parts from them.
You can find tractor parts at hoyetractor.com. They have reasonable prices.