well, I'm partway into it and I must say, it's not like Harley boutique accessories, where if they change from coarse to fine thread it takes a 6 page instruction sheet. This is way more fun.
I have managed to bugger beyond salvage one of the lower mounting studs, the 14 mm fine thread one; that's soon to become a 1/2" grade 8 bolt. No problem there.
The rear fender support bracket is in the wrong place; needs a new hole in the fender. No biggie, except for the extra hole.
The spring perches are a snug fit, and the rear hole in the spring perches aren't big enough for the shouldered nut, so that'll get reamed out. Every manufacturer has a different philosophy; I'm seeing that RE"s is to use studs a LOT.
On the very positive side, the seat appears as though it'll sit lower than the usual solo. Also, I squeezed the very tail of the supports a bit and drilled them, and will mount the vintage turn signals there, out of the way, very sanitary.
By the way, a stock HD license plate bracket looks extremely olde fashioned and correct.
more to follow.