Ive been on the site and looked around, supposedly they size the turbo specifically for placement at the muffler area and take into consideration heat losses (and therefore density change) when the gasses reach that point.

Thats true Kavett, I think on the site it said full pressure is reached in a fraction of a second so I wouldnt call that much lag at all.

Since it takes the place of the muffler, its way up there kinda above the rear axle, so I would assume its pretty safe, and you could probably fab up a little skid plate for it easily.

Doesnt seem like an impossible job at all, and if someone had the time and $$$ they could have a one of a kind X.