I have had 3 7gs and mine have all been good with oil. Also, is the motor in that GS? Very valuable as it has a factory forged crank and oil squirters and of course DOHC, and they were factory spoiler cars so their rear cover has no provisions for the 3rd brake light and it cleans up the look when put on a spoiler w/ brake light. I have a GS rear cover in my car.
Also in regards to color I really like the white but I have a friend with the same exact body conversion in white, but I have thought of painting the main body white then do the roof and pillars black like the talons have but idk how it would look. Latest idea was all black and paint the hood black as well because the clear always faded on CF parts.