I just bought a '87 burb with 250K on a 350 TBI so I'm guessing I'll want to do an engine swap within the next year. Three questions for all you experienced TBI junkies out there. Should I go stock 350, upgraded 350, or 383? Should I go new or rebuilt? And last, where to find something dependable, as this will be the family daily driver. I'm in the East Valley of Phoenix , AZ, so anywhere local or national type suppliers would be great, too. Also, wondering if anyone had heard about or done business with ATK Rebuit Engines, Motor Works Engines, Beck Racing Engines, Jasper Engines & Transmissions. I found them online and some have decent warranties, but a warranties only good if the company stands behind it. I'm a newbie so any info no matter how trivial is appreciated. Thanks ahead of time.