Flyinrog said it well.

There's not much from the 80's that you still can't do today. Did you NEED 2 servos on the ailerons back then? - No - So why would you need them now? Simply put, it's because manufacturers design their planes that way so you have to buy another servo [:@]

And personally, I got rid of all my 60-plus size engine once I discovered 4-strokes. Get yourself an OS 91Surpass 4-stroke and you'll throw YOUR 60's away too