I got a Giant in large. Toptube is about 57cm, seatube about 51cm.
Conventional frames are typicallly measured from centre of BB to either centre of the top tube or top of seatube.
So, I would want a traditional frame with a seatube about 57cm 'ish'
Will, measure your top tube, from centre to centre and that 'should' be about what you want.