I A,
KR2's? - Well, my dad owned one for a while and he reckoned it was the most twitchy short coupled aircraft he had ever flown. I actually turned down the chance to fly it... (and bear in mind we fly an Isaacs Fury from a 250m hillside!). The original builder only flew it once and ground looped it after ignoring advice from the test pilot regarding his experience levels. The aircraft would exceed the 135KT VNE in level flight though.
The 'ol man operated it out of Kemble, but later decided to base it at our strip - He got it in, but it left on a trailer.. and the aircraft was subsequently written off by the next owner.
Sorry if you didn't want to hear all that..!
As regards the US thing - It's something that I'm looking at and the numbers really do add up well if you bring two aircraft back. It's a shame that the CAA stopped vintage aircraft going on a PFA permit and that the PFA are so leery about imported homebuilts though - It kinda limits your choice!
I dont know if it's sold, but
this may be just what you are looking for...
Cheers
Kingy