First Tahoe, but no stranger to full size GM SUVs: '89 K5 a long time ago and just sold a '91 V2500 (3/4 ton, 4x4) Suburban, last year of the squarebody. The burb was pretty well built up, 383 stroker motor, later model 4L80e, lots of TBI tuning etc, but I just wasn't using it and wanted to...