I purchased my first 6x6 a few months ago. Its a 2007 Max IV with the 18hp briggs motors. It was owned by a older gentlemen who only put 79hrs on it. I've rebuilt the fuel system and added a couple extras I picked up from the forum. It took me 6 months to find it. Now that I have it and got it to run better I need a lot more power! I don't think its strong enough to pull my wife, daughter and myself around without struggling. I have already put it on craigslist once but wife wants to see if we can upgrade it and keep it. My daughter loves it. Researching on here Ihave found lots of information on the bandolero motors. Does this swap require a lot of modifications to install or is it a drop in turn key? If its too much to mess with I'm selling the Max IV and starting a new project. Thanks for all the information