I have a 98 z28 that needs the lines to the rear replaced. I searched but coulnd't find anything definitive on the flare and size of the fittings to the rear of the vehicle. I'll be running from the ABS block all the way back. Does anyone have that info handy? Or a blown out diagram of the brakes to the rear so I can see what else I need to purchase to replace everything. Thanks!

 

“Should” be (can’t say with certainty it is) in the 1998 factory service manual. Free download here, courtesy of GaryDoug:

https://www.mediafire.com/?40mfgeoe4ctti

Since you mention “lines” (plural), can we assume you have traction control, with dual rear brake lines? Might affect the fittings.