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You are missing something, and you're looking at the wrong diagram, and the biggest difference is the wiring, not the mechanical parts, although the air mode damper is also a different part number between pre-89 and 89+ as well. Jeff

Upper bushings are sold separately, lower are not. Jeff

Jay Marks is the name of the dealership. The person people are probably referring to is Jeff Watson, who does not do online sales anymore. You'll want to call the dealership. Jeff

Phoenix can do new harnesses, not sure if Dr Tweak has done a 7M one before, but I'm sure if you sent him an old one, he could make a new one up. They also sell connectors from suppliers that provide the OE connectors. Toyota also sells most connectors, and a few harnesses are still available...

No they're not. The foot/defrost will not function with an 89+ control in a pre-89 car. I am not aware of any easy way to make it work right now, though I haven't checked the wiring diagrams very thoroughly. Jeff

Select fit bearings cannot be sold in a set, as it is specific to your engine. Other sizes are sold in sets. Jeff

Thread moved. Jeff

To avoid confusion, in most cases, treat an 86 Supra as an 85 and an 86.5 Supra as an 87. Jeff

I 100% approve of the change in cruise control switches from 89 to 90. The stalk is way better. Personal preference I know, but I hate having cruise buttons on the front of the steering wheel. Toyota still uses this design to this day. Jeff

The bearing thickness needs to be doubled, because it is on both sides of the journal. Jeff

Yes harnesses are available. Quarter panels were up until recently. They are no longer available now though. Good thing I have a spare in my basement. Yay. ;) Jeff

There is no chance his will say MA71, as there is no chassis code MA71. Since his car is obviously a Japan-spec car, and they did not use 17-character VIN's in Japan. It will simply say MA70-xxxxxxx. That is correct. Japan had the 7M-GTE starting from the beginning. They never had the 7M-GE...

I just watched a bunch of those "Expert-Village" videos on Youtube... they're so backyard mechanic, it's not even funny... okay, it's funny. Haha. Jeff

I really loved the Bridgestone Potenza S-03 Pole Positions, but they're no longer available. I've also used Falken Azenis RT615's and Toyo T1-R's. Both are quite good, not sure what will be going onto the Supra now that the S-03's are dying, but probably T1-R's. My brother's Supra has Toyo...

Just a heads up to anyone wanting to come and get a hotel, the booking has been extended to May 15, 2009. If you're planning to attend, get in on it ASAP! Jeff

Checked the part numbers, 1JZ shaft is a different part number than the 7M shaft. Also, the rear transmission mounting plate is also a different part number between the 1JZ and 7M. Jeff

Because there are 3 sizes of rod, 3 sizes of crank pin, and 5 bearing sizes. Jeff

I verified some things before posting what I did: The side bearings are the same between the A70 and the JCE10. TRD lists the same LSD for the JCE10 and the A70 (41301-JX001), which means ring gear fitment should be correct, as well as the dimensions should fit the MA70 case. The only thing...

Why not? Just find a crashed car with LSD? Jeff