A well done, effective, and efficient supercharger or turbocharger set up for Rover V8s. The crap that has been on the market before is, well, crap.
The high steer idea is tricky- pretty much impossible on a coil sprung axle (JL I know you've tried) but it could be doable on a Series knuckle.
There have been reproduction Stage I grills made, you just have to know the right people
1972 Land Rover Series III 88"
2012 Jeep Grand Cherokee
2007 Suzuki DR650
The problem with forums is that there's too much "This is what I'm planning to do...." and not nearly enough "This is what I've done."