Yes, very worth it, just for oil changes. I got the 2 piece, 72" I think is the length. Should be right for stock ride height. If lowered any you will have some issues but nothing the extenders or a 2x4 won't fix.
it tells you on the website how to measure and see which ramps you need...mistake I made with my Mach is assuming that the longer set would be low enough for me...and its not
I'm lowered with h&r race springs and the 72" ramps work fine.