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Message: <blockquote data-quote="Tonimus" data-source="post: 25084" data-attributes="member: 12914">Welcome! Sounds like you've got a decent project on your hands. I'm sure we'd all like to see pics. I've got a '06 Tahoe and '78 Suburban, so I'm sure I'm a little biased that the SUV GMT800s are the best.High pressure oil pumps are no problem. Lots of people run them. As far as the pegged oil pressure gauge, does it display lower pressure at idle? If it's always pegged, it's likely a bad sensor. A PITA to replace, but it can be done without removing the intake. Keep an eye on the trans fluid level. A simple leak isn't the end of the world. Not telling you to not replace the trans, just might be worth throwing a bottle of Lucas at it and see what happens.As to the tires; I prefer 31" tires myself, but 33" are a close second. You should be able to pull off 285/70R17s with maybe some slight fender rub at lock. But as with everything YMMV.Again, welcome!</blockquote>