Materials:
1x Titan
1X Maverick
Silicone sealant
A couple of tubes of epoxy putty
An inch or 2 off a metal hanger
Whatever tools you have around, I don't have a dermal but I'm sure the cutting would go much easier with one.
The first thing I did was to get the Titan firing mechanism out of the Titan shell. I would have kept the gauge for looks but it was leaking air, so I chopped off that tube and then most of the nozzle as well. I've read that you can use hot glue to seal the hole left over, but I used silicone sealant instead, and then put some epoxy putty over that later on. Do the same thing with the Hornet tube nozzle, making sure to keep the Hornet tube as long as possible.
Now cut the short tube between the pump and the tank, and then unscrew the plastic nuts helping to hold the tube down. Take a pliers and pull off the rest of the plastic on the nozzles. You could got to the hardware store and buy some new tubing for the next step, but if you left your Hornet tube long enough it works perfectly. Just push it tightly onto each nozzle and screw the nuts back down, it should be airtight without any extra sealant, and look like this...

Now onto the Maverick

Take out everything except for the spring that holds the trigger back. Then cut it like in the picture. I chopped a bit more then necessary off the front because I wanted it to be easy to remove the Titan barrel. A lot of this step will be trial and error. If you're wondering why there is an awkward looking rectangle where the button used to be it's because that's where the pump tube will exit the Maverick shell, and it looks just fine once everything is back together.

Unfortunately I don't have a close up of just the trigger. Its just a piece of metal hanger looped through the hole on top of the Maverick trigger, and then epoxy puttied to the Titan valve pull. I had to go through and trim down the putty after it dried but it's holding up just fine.
As you can see in the picture above I puttied the tank to the top of the Maverick, and the pump to the bottom.

Here's what it looks like from the outside. I cut a tiny bit off the rim on the back of the pump so it was flat, and as of right now it'd only puttied to one side of the shell. Its quite strong already, but once I get to the store to buy more putty I'll be doing the other side as well. I won't be able to open it up after that, but the trigger seems to be holding up well enough so far.
With the barrel I knew that I wanted to do a scatter shot, and be able to fire the Titan missile as well. There's plenty of write-up's about this, I just used 3 rose art markers and some fbr with hot-glue and silicone sealant in the stock barrel. I also drilled out the air restrictor from the tank. You could use whatever barrel you want to though.
Ranges were taken outside in Minnesota, using my 48 foot long house as a guide. I haven't plugged the OP valve yet, and it only takes around 10 or 11 pumps to start kicking in. I don't want to plug it until I finish reinforcing so that I don't break the putty.
The Titan missile went about 55 feet, and the scatter shot (using stock buzzbee darts) varied between 45 and 50 feet.

And there's the finished product. Aside from more putty I might be putting a handle on the pump. A paint job might have to wait until summer, there isn't much room inside here. Hope you guys enjoyed it!