I think you are going to have to take your own measurements.
The spacers are 1" tall and have a hole that the bolts will fit thru. The outside dimension doesn't need to be that big, just big enough to support the metal sleeve inside the rubber bushing. I have heard of people just using a stack of washers (I would recommend grade 8 washers, softer ones will deform over time).
Drop the skid, pull one of the diff bolts and measure it. The first step would be, find two bolts that are one inch longer (make sure that they are class 10.9 or grade 8 and rated nuts that fit). If you can find bolts, measure the shank of the bolt, this is the size hole for the spacers.
Now onto the big "diff drop debate".
I did the diff drop. Do I NEED the drop? Probably not. I think it is cheap/easy insurance. It should prolong CV life.
I dropped my skidplate. I didn't remove my diff drop and measure but as others have said you aren't dropping the whole diff, just rotating it. The rear, driveshaft side, mount is 6" from the axle centerline. The front, where the drops go in, is 7" from the axle centerline. There for when you drop the front 1" the actual axle centerline only drops .462" (~15/32") Just under 1/2". It's hard to tell what strain it takes off the CVs when wheeling and you have full droop.
Is it worth it? That is up to you. I'm leaving mine in.
The other side. Some say that it can actually cause damage.
Let the fireworks begin.:ybrick:
Why is a diff drop bad.
The front diff only holds 1.12 liters (1.2 quarts) of gear gear oil. So in relative terms, it holds very little. When the Toyota engineers figured out the proper oil level, they had set it up so when it is at the right level, it is suppling the front pinion bearing with the correct quantity of oil during its operation.
Now, with the front diff dropped at an angle, the diff oil is all in the forward position, away from the pinion bearing. This causes the bearing to run dry during operation slowly but surely wearing it out.
Now you say, well how about adding more oil to get it at the same level for the pinion bearing. This causes an over fill issue. Lots of heat is generated, oil foaming occurs, seals blow out and oil life is cut in half.
YMMV
Just one view of the other side. It does make sense too.
