mine is an acculift ph24008q and is making some nasty noises going down. Any idea where to get a new one? Ive done a google search without much luck.

You can try to lube it first.

They are measured in opened and closed distances. They are interchangeable and simple to install as long as you know the throw distance. You can measure yours. I replaced mine last year and it was about $300 for a pretty HD, full stainless one. My hatch is large and heavy.

Scott,

Like Tim said you may want to spend a little more and get a nice one, or contact the company here for parts on yours:

http://www.qmigroup.com/acculift/linear_actuators.cfm

XT