The sierra column is, in theory, height adjustable but in application for this car might as well not be. In its highest possible position there's only a few millimeters of clearance between the triangular section of the steering column and one of the under-scuttle frame rails.
I've mounted the steering column in place with Class 12.9 M10x1.50x30mm (x2) socket head cap screws and Class 8.8 M10x1.50 nylock nuts. To help spread out clamping force, I have used 30mm OD M10 washers on front face of the column mounting bracket. These fasteners are absolute over-kill and shouldn't be torqued to more than Class 8.8 M10 threadlock/lubricated spec.
The battery location is great! The Odyssey PC680 fits [almost] perfectly. This battery was damaged in shipping, a new one is on its way. Which reminds me, I should print some terminal protectors.