thanks tester, but not sure I understand the 60x48 size, do you mean + a 150mm stem?
You current set up has a top tube + stem of 63cm (57+6) which you describe as too long. To cut that down to 60 using the 12cm stem which would be considered normal on a frame of that size would need a 48cm top tube
You current set up has a top tube + stem of 63cm (57+6) which you describe as too long. To cut that down to 60 using the 12cm stem which would be considered normal on a frame of that size would need a 48cm top tube