Yes, a 35 horsepower Briggs Big Block on a 61" mower with a 3 bag catcher. It's a BEAST to say the least. I just picked it up tonight at 5:45, once I got it back home I removed the ROPs and the front weights and traded out the "medium lift" blades for a set of high lifts I had sharpened and ready to go. Also had to put air in all 4 tires. I think they let the air OUT on demo machines to make the ride super "cushy" to impress people. I'm not impressed... Aired them to the proper PSI. Now it's ready to MOW. I cut my back yard, but it was just cut on sunday. The 35 hp motor dosn't even know the blades and blower is running, and even driving full out dosn't bog the motor. This thing WILL do a wheelie, the 16CC pumps are FAST and very responsive. What I found odd is that this machine dosn't take diviots when turning like my 227-61" does. I think the better responsiveness of the hydros keeps the wheels from going stationary. I'm not fond of the extra LENGTH of this machine versus my 227. The frame is 4 inches longer, no big deal, but the catcher has to sit in the END HOLES versus the front holes like on my 227. Having the catcher another 5 or 6 inches back there is NOT pleasent. The biggie is that I can't reach back and feel the #1 bag to see if it's getting full of not. I can't even get CLOSE to it. This is a big deal breaker for me... I don't want a mower I have to get off to look in the hopper, or run till it pluggs up. It's also back there so far I'm a lot more likely to hit it on things, it's out of the comfort zone, if you will. It also sits higher (the catcher top), meaning it's going to be harder to clear low limbs with it, and it will take more of a beating, which wears the fabric fast. The other noticible thing was the HEAT. THe 35hp big block throws some heat and even with the cool temps, and in the evening, in a few minutes time I could feel substansial heat on the back of my neck. I don't notice engine heat off my 227 unless a little breeze is to my back pushing it towards me. This one seemed to be heating my neck no matter which way I was going and how fast I was running. I will give a better report tomorrow. I have this machine for a couple days at least. My 227 has a bad hydro pump (just starting acting up today), and since I had scheduled this demo for tomorrow they are just letting me hang onto the 335 until my 227 is fixed. I still want to demo a 325D before I make a decision as to what model I'm going to upgrade too.