www.uniquemotorcars.com
Unique is not a really a kit.....usually delivered as a rolling chassis. Those that own them and/or have experience with them, love them. Backdraft also deserves serious consideration. SPF is also well done. Kirkham is in a higher price class, at least it was until recent sales, but that may be over.
FFR is more of a do it yourselfer, but I have seen some extremely nice examples.