I'll admit to a few moments where I thought maybe, just maybe, I could either build my own subframe or hire it out, rather than spring for the pricey oem subframe kit. But when I added it all up, I realized that yes there was a price to pay for convenience but, with the snow right around the corner and time in short supply, I bit the bullet. The proper subframe kit for the B7610 HSD is #B2733.