and just to be clear, it is the one at 2.5k which is formally a GUF2 but you can try to split it to 2x GUF1s. The GUFs at 3.5k and 7k and above should formally be a choice between 1x GUF2 or 2x GUF1s - i.e. if you want GUF1s just ask and you should get them.