I didn't like the binoculars either and used T200-2s, one either side.
So you want to match the output?
Couple of ways....
Use a 1:1 transformer and then conjugate match the O/P (series L, parallel C). Turns wise, not sure on either but use some scrap wire and experiment, start with 5T on the tran and series L with 1nF C.
Other method is simpler but not as 'adjustable'.
Simply work out your O/P Z, R=V/I, this will be lower than 50R, divide one by the other and take square root to give turns ratio. Standard stuff.
So, say, amp takes 10A@50V=5R.
50/5=10. Square root of 10 is 3 and a bit so use 3:1.
Ok
Str.