Kirkham will put the 289 body on a 427 coil spring chassis, that’s actually the cheapest route versus original style suspension.
I actually haven't seen any at all with that combination. There was that run of "anniversary" 289 FIA cars but they were leaf spring chassis.
I just happen to like the look of the FiA/USSRC cars with the cut back doors, flared fenders and small 289 nose.
That has to be a nice package on a coil spring chassis.
ERA will make one as well.