I got the motors on ebay and paired them with a 3 shaft black steel gearbox pair, much like yours (mine are mid/low where yours are high/low). I have metal tracks and sprockets and over a scale quarter mile in a very crude test I got about 2 MPH under scale (80kph is top speed for a real 99A, about 47 mph and I got about 45 mph). Here's the video of that

https://www.youtube.com/watch?v=KR_lBWqGLsc I sent a pair of these to Erik so maybe he can give us his results so far, but I'm not entirely sure he's found the time to put them in a tank for trials. I also had these motors in an Imex full metal Tiger One, and I ran it side by side in a drag race with a completely stock Imex full metal Tiger One to compare the difference. The 360 motors pulled away from the stock equipped tank with no problem. Let me know if you want to see that video. Or you could just subscribe to my youtube channel and you'll get all this cool stuff as it happens. I think that would make 32 subscribers I have now. Woo Hoo!

The seller I bought mine from doesn't have any more, but these are the same motors. You need a T9 Torx to get the mini pump off and then I just used the stock brass pinion that was on the original motors. I can't say yea or nay about this seller, but there are literally dozens of sellers selling these same pumps on ebay, so shop around and you might find a seller you're familiar with. Or you could email the seller I used to see if they plan to get more, the seller's name that I used is jojo201007 on ebay.

http://www.ebay.com/itm/Water-Primin...item463895022f