Hi n1ghtpony,
I do not know for certain...but I am almost 100%...that the answer is a NO, unfortunately

.....BUT..having said that, how good are you at drilling accurate holes and can you line things up straight

......The reason for asking is that if I am right and they do not match up, then you can still use all your Tiger Heng Long metal by modifying the Matorro to take the Heng Long parts.
Firstly you will need to remove the Matorro mounting pegs that are used to mount their gearboxes into their model. These are useless to you and they will just get in the way.You then have to position the Heng Long gearbox so that with the drive sprocket fitted to the drive shaft, the main drive sprocket is true and straight and that it is spaced the correct distance out from the hull. Check this by laying an 'open' piece of track along the wheels to help position the drive sprocket and the gearbox in the right place. you will need to add new spacers underneath the Heng long gearboxes to help raise the output shaft into the correct alignment. The best thing for this is M8 nuts laid in their side. These can be used later on when you come to bolt the gearbox to the hull floor to replace the plastic spacers that were removed earlier, and they are much better at spreading the load, and act as a firmer base as well.
Once you have the gear box in the correct position, try to draw marks on the plastic hull base to indicate where it will fit and to drop a drill bit or a sharp length of steel down through the Heng Long gearbox mounting holes , to mark the floor. These will be the points at which you drill the plastic hull so that you can pass long M3 bolts up through the floor, through the spacer nut, and then through the gearbox mounts before then adding a washer and a nut to tie the gearbox down securely.
It is not as daunting as it may sound.....if your holes are a bit out...you can always alter the ones in the hull and if you make a large error or want to really tighten the bolts up then you can fit a 'penny washer' or a 'repair washer' as they are also known between the bolt head and the plastic hull. It does work as I have a Tamiya King Tiger that is fully Heng Long driven and controlled....yes I know the Tamiya blokes will not talk to me now....

....but it was an old version and I had all the Heng Long parts so why not use them instead of wasting money ?? I realise that there will be bolt heads (actually they are slotted screw heads) sticking out of the bottom of the hull but they are hidden from view unless you lie down in front of the hull and they do not seem to catch on anything...if they do by some strange occurrence, then you can always file an angle onto one side of the head and position this facing forwards, to act as a ramp to slide over a stone etc. I have never had a problem...so I would not worry about it. I hope that this helps you to recycle some Heng Long Tiger parts....
Alb.