ambro

I'm looking at getting a new cross frame and would swap components from my old one to the new frame - but I'm confused about how my current fork will work in the new geometries.

My current bike has a HT length of 17.5cm , and Seat Tube of 55. I run a +17 degree stem with about 1 CM of spacers.

One frame I'm looking at has the same HT (17.5) but the ST is 60.

My question is - since the HT is exactly the same - would my fork and stem fit relatively the same same or since it has a much longer ST - would that effectively make the HT longer, thus I would use less spacers, or possibly need a stem with less rise?

Thanks in advance!