an issue like this came up with obx, a guy installed the cams (which were rumored to destroy the rockers) and then documented the progress ...and turns out they did. OBX and BLOX let skunk 2 do the r&d then they copy it with cheaper materials in an attempt sell the same spec product minus the brand name(and quality). Some products are fool proof (valve covers, throttle bodies, throttle body spacers spark plug wires) and therefore cant be f^cked up even if they tried. These things are ok to buy. Others are pure garbage (Cams and about everything else they make IMO). I did hear however that obx LSDs are holding up. I personally will be researching BLOX products to see if which parts are affordable and safe alternatives.