A friend of mine is running it in is 2WD buggy with a 7.5 hacker brushless in it. The only issue he's had so far was a wheel pin braking, but I've done that with a Novak 13.5 so that may not be an issue. He did say however that he noticed a little more power/punch than with the SMC 5000 28c rated lipos. Here's a link that I followed from Hackers webpage, looks like you can get them there.
hope that helps.
AE B5M, Orion R10 Pro, Trinity D4.
LSR Speedway, Custom Works RC, Fantom, BSR.