I don't know about rear lift but the front turns into a speed boat.
You don't need a lot of front spoiler. In fact the "mini air dam" as Hall calls it is effective enough for all but LeMans type efforts.
Not only that, but the shape of the L bumper helps as well. If you look it directs air over the front deck lid and the combination with the GTS, mini-air dam does more than help.
You can replace the original with a light weight fiberglass version which removes the crash shock absorbers that went along with it.
There is a picture of Revson standing alongside a Patera with his front spoiler on the car in I think, a Road & Track review of the car from around 72.
I never tried the Revson. I thought it changed the look of the car too much BUT coments I read about it was that it did reduce front end ground clearance on the car.
I have the GTS and the design is a little tricky. It actually mounts about an inch higher than the bottom of the lower radiator support.
I personally think that the best looking combination of the car is the GTS front spoiler with the fiberglass L front bumper.
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