I have an '88 IROC that I'm swapping rears in. Current rear is a 10 bolt non posi 2.73 drum. The rear I'm going to is a built BW 9 bolt with 3.70's. My question is how much line am I going to need to get this to work? I have a Summit Adj. prop valve and B&M line loc I'm installing at the same time. I've seen pics Adj Prop valve and Line Lock and want to do what this guy did. What are the stock size lines and fittings? Anyone who has done this swap before please chime in as I need to do this swap this weekend before my tuning can be done.