the wheel gds sells for an upgrade is based on the stock wheel with a larger inducer. I haven't looked into it but if the exducer doesn't need machined, the all you are getting is an upgraded inducer, which would effectively make it an HX35/40 hybrid. and if you read into my write up recently about how i felt about the performance of the 35/40 towards the true 40 i made, you will see the performance gained is a lot better with the true 40 and 14 housing. i know it is a slightly more expensive route, but you can piece it together, which will split the cost up, and get 10x better performance while not sacrificing anything, and gaining a larger exducer which will increase cfm. so i know it's a budget build, but i do have direct comparisons between turbos, and have results that show there is plenty of room for improvement on the 35/40 while maintaining a low cost
