[Yukon Jack]

Sorry for the delay but got you a couple other measurments this morning. From the edge of the floor behind the front seats to the tube of the roll bar on my K5 is 7 1/4".

From the tube of the rollbar to the point on the windshield frame where the top meets the windshield frame (directly over my bolt on rear view mirror) is about 33 1/4".

I've been told I have the aftermarket style roll bar in my 70 K5.

Hope this info helps.