I am called Grumpy. I am the president of WOO. I spend every day at Ryans shop, which is behind his house. We started out racing mowers, building everything by hand, using a drill press, cutting aluminum with a skill saw, bending sheet aluminum for cowlings and hoods over a piece of pipe, depending on the size of the bend and smoothing out a cut on a old Black and Decker wood belt sander. We do not have all the fancy machines to do these jobs, but some people insist on having us build these parts for them. If any of the competion has seen his bodies or his moly front axle, they are all built at home. He did invest in a flow bench to check his work. Not because he is my son, but he , I believe is one of the best cylinder head people going. Just hogging out a head as big as you can get it is not always the proper way of doing it. He has done heads for customers all over North America and as far away as Scotland. He has redone cylinder heads that have been done by other builders, with satisfactory results.
No one is sending you to these people to buy parts, you are free to build them yourself or purchase them from your buddy that just bought a new die grinder. What you are purchasing, is a proven product that helps make you run up front, assuming you have done your part correctly. In our club, any ungoverned engine must run a billet flywheel, therefore we must purchase them from ARC. These companies spend a lot of time on R&D and have to recover their time plus make a living. There is just the two of us at Ryans shop and I have seen him spend a day on the phone giving free information to guys that have not spent a dime there. But there are customers that call that he can't afford not to take the call. Eventually the guy that got all the free information becomes a valued customer in the end.
If you don't want to buy the good stuff, then don't. You are free to do whatever you want. Remember, if you do, you are not only buying a good product, you are buying a proven product. A lot of these small business men are just like you, only their phone rings seven days a week and at any hour of the day plus you get the info that you needed.