It's like this... It's a block of WOOD, 4 axles ... 4 plastic WHEELS and some WEIGHT. The WASHERS are $.018 each at a hardware store. Either your cars gonna be fast or it's gonna be slow... Will the weights make a difference ?? Maybe a little if installed right and car is balanced. I see this working better in SS rather than BASX cause of the fender... Everyone has the same info and what to do with it... Far as wheel weights go to LOWES and spend $2.00 and u have weight. You glue them together , notch for the rail, and attach to the body. This entire topic is over washers & weight. GEEZ... It not illegal , what's gonna happen peoples gonna keep complaining and there won't be a BASX class , then what? Why don't people build STREET PROS & ELIMINATOR , and unlimited..? Just race , have fun, it's a hobby guys... RULES ARE RULES, no one in BASX IS BREAKING THEM WITH WASHER WEIGHTS !