Fella's I have 2 of these BIG MOUNT engines and 2 of the standard size front mount engines, and yes the front mount saddle on this engine is BIGGER, it's not just being said in the add for the heck of it.........it's a fact.
and ther eare others that can vouch for thisfact as well............
the pic is showing the FRONT mounting saddle and it is larger, been there done that and got the T-Shirt......!
The huffy cranbrook and some others has the larger tube and so does my Kulana cruiser, the BIG TUBE MOUNT engines will saddle those tubes without having to use the "big mount kit" U-bolt and plate, if a person doesnt want to change the peddle chain ring the plate kit can be used to raise the engine up enough so that it will clear the chain guard.......
Do some research and you will find what I'm saying here to be fact not fiction...
So mjharden1 yes again to the question you ask and I have explained also what you must do for it to be a direct mount up on your bike.
Peace