Was thinking about getting a pair of the 56" Race Ramps for oil changes, questions for those who have them:

Are the 56" long enough to get a TA (or similar low car) up without scraping CF Splitters? Need extenders?
Assuming you drive front up and jack up the rear and put on stands, are the Race Ramps tall enough that you can get under car or is it tight?
They seem like a nice safe way to get half the car up (although a bit pricey) versus jack stands.