gens ace dimensions: Size: 117 x 34 x 32mm (L x W x H) Weight: 261g
to be honest on paper they don;t have the c rating of nanotechs. i just got a couple of nanotech 4s 2200 lipos, with much higher c rating 45-90. only tried 1 flight and it wasn;t workign because they were smaller and lighter and didn;t balance the plane, i was all over the place.
With the slipstream the lipo is at the front and the weight is needed for balance, so on the stryker you're probably better with the nanotechs- higher performance, lighter weight, and the price is great.