[Cosmosdan]

Use 5/16" pins or tap the plate the use a bolt with the head cut off and poke out about 1/2" or so. shape is not as important as the distance between centers. I cut a square into it to use my big ratchet but one could just weld a piece of pipe to the plate.

[NMKawierider]

I like it. Made my own but I like yours better. Think I'll build one. 

[Cosmosdan]

The 1/2" opening should be. 005/.010 oversized to fit the ratchet.

[NMKawierider]

That looks great!

[Cosmosdan]

Being a machinist helps

[IVIaniac]

Your's is nicer than the factory one.

[Cosmosdan]

They are going as cheap as they can. If I had to make these for others, they would be a bit expensive. Thought I would at least post it so others can get the dimensions or ideas of there own.

[gfmoto]

Awesome job!!!
May take this pic to my friends metal fab shop and have them plasma cut one for me.
If that's ok with you to use this template.

[Cosmosdan]

Dimensions should all be there. Might want to have him under cut the dowel holes so you can ream them for a press fit.

[Cosmosdan]

Bump....

[Wot]

Also just found out a standard clutch fan spanner for a truck works great. You can pick one up at any auto parts store.