There was no front mounting kit supplied other then a strap that wraps around the tube and is secured with nuts. If you look closely you will see that the clamp that I used is a muffler clamp. You can tell by the curved portion inside the frame and on top of the plate that is wielded to the angle iron.
Looking at your picture, it looks like the studs screw into the block (front mount) and the clamp is against the outer tube, and held on by nuts. I made this mount because I didn't like 1) the way that the curved mounts fit. Not flush with tube, and 2) I wanted to raise the engine up on the seat tube for both a better chain placement and clear the chain guard on the right side. On my first build I had to modify the chain guard as the engine sat too low. Both mounts fit totally flush on the tube, which is about impossible with factory mounting, especially on a Cruiser. To get a perfect fit in the "V" the "V" needs to be 75 degrees (with no curve) , anything else will be an improper fit but can be gotten away with.