OP said his wife's spine (I assume; it was spelled spline) hurt.
My wife wasn't really comfortable on my Road King conversion, even with the Tall Boy pillow top.
We ordered a Day Long seat that was built to our particular size/weight specifications. The base price was $605 but we paid extra because we are just slightly (!) overweight.
Custom Motorcycle Seats and Touring Saddles - "Day-Long" Touring Saddles and Motorcycle Seats by Russell Cycle Products
MUCH more comfortable.
My wife wasn't really comfortable on my Road King conversion, even with the Tall Boy pillow top.
We ordered a Day Long seat that was built to our particular size/weight specifications. The base price was $605 but we paid extra because we are just slightly (!) overweight.
Custom Motorcycle Seats and Touring Saddles - "Day-Long" Touring Saddles and Motorcycle Seats by Russell Cycle Products
MUCH more comfortable.