It appears you're dealing with a wagon, so I'm sure you've traded notes on usual leakers with fellow longroofers. Sedans have their own collection of places that corrode and fill up the footwells. Good at least to hear it's limited to one side. Also, sure you heard the trouble running heavy A/C (especially at speed) if the drain elbow and downtube is missing and condensate wicking back inside. Your description sounds like more than just a single day in high heat though. If it rained real hard, - and you were parked downhill, - and the rear roof-to-door leaks, or fenderwell rotted out, then water can run from rear to front. I had a ghost leak in an '80 Riviera turned out to be a long section of urethane broke loose from the bottom of the windshield. A spray hose never showed it. But I noticed the windshield moved one day when closing the door! Had it reinstalled and no more leak.
\'96SS SOB: SSRI, Herter Tune, Tri-Y II, , 3000 Edge, F/HO bars, METCO extendeds with CV MMC, Bilsteins, currently Vredestein Ultrac Sessanta (315/35 rear). Finally, wait for it... LT-4 knock module!
\'96FWB BUW-Butt Ugly White: PCMPerformance tune, HDFA w/ swissed filter, 1/2 SLP s.s. catback with H- and Flow Super 50s, oem opti rebuilt 3 times, SS Bars, METCO LCA, Airlift 1000, Monroe SS, PowerTrax No-Slip, CTS wheels with +1 rubber. Finally, yes again... LT-4 knock module!
Last edited by 96 Black; 07-28-2017 at 10:56 AM.