shock extenders?

Does anybody know where to get these?
The things you screw onto the top of the rear shock to gain an inch or two in length.

For a 69 Camaro
Thanks
John

I have a set (3" ext.? I think) made by Mr. Gasket. Try Summit.

:)

the screw in type of extensions are not a good idea thy can brack and ride like sh// just add one more leaf its more safer