Backhoe BT1400 bucket quick attach flavor

[BeaconWoods]

I plan to add an attachment on my BT1400 backhoe on my M62 TLB. It has the quick attach feature. I intend to order the ears to weld onto the new attachment from ebay. It turns out that there are at least three Kubota quick attach styles: u25, u35, and u45. My minimally calibrated eyeball suggests that the BT1400 quick attach is the u35 flavor. True? It is surprisingly hard to find any info on this.

Thanks.