cen matrix battery tray question

[truggyracer1]

hey guys!

i just got a good used matrix buggy roller that i plan to convert i stripped all the nitro crap out already and did the servo tray mod as well i was planning on using a tekno tray like i did in the tr arena but had some issues!! if i put the tray towards the front it comes close to the spur gear (didn't like it that close) i think i'm gonna ditch the tekn o tray on this one and use one of mikes but which one do i need? i have 2 5000mah reedy 2s 7.4 lipos i plan to use need to fit those with body issues any ideas or suggestions?............thanks!