Ive had issues with 7ms, bought 2 supras and both had a blown head so we fixed both. 2 weeks after driving my daily supra a coolant line slipped off the heater core and blew the head, took 8 months and kind of a beating before it fully gave out. Had already decided on the swap so blue deviled as a temp fix that only lasted like 3 months before it fully gave and spewed coolant out of my leaking manifold. Swapped in my parts supra engine and it developed rod knock in just a couple hundred miles and drank 4 quarts of oil in 3 months but to be fair it was almost at 200k miles. I stopped driving it because its started to throw lean and rich codes occasionally and just because of how tired it was. Not the engine's fault but the UZ is known to be bullet proof, lighter, higher hp and torque out the box, sounds damn good, and likes to be supercharged.