sullivan is also my vote
suprisingly it just bolted in place with spacing of rear bolt and tail of fuse= l just had to file down the sides of the mount a bit for the nut area - as per pic - then just used a small screw at the very back for stability - the mount is suited perfectly to tail shape - no glue - the main bolt/nut holds great
l have just left the tailwheel to freely caster - no real difference on ground handling - but who wants to be on the ground anyways?

(l love this plane - but l also replaced the main wheel axles with proper du-bro axles - the supplied socket head bolts bent on some of the earliest flights)