Pete, here you go:
- what nerf bars to use front and back & - who supplies the best nerf bars;
I did not use any nerf bars, it works perfect w/o any.
- where are the bumper fixing points and do they attach to the nerf bars;
The ruf bumpers are bolted right underneath the fenders (front and rear bumpers) and are also bolted under the rear reflector and front hood right to the body.
- how best to fill the gaps between the bumpers and the body panels.
front: the 964 smile (seal)
rear: original body seals are fine