1970 F134 Crank Pulley, Wrong Size ?

Stock 70, 134f, 2 grove crank pulley.
Mine is warped. Ordered one from crown.
It's bout 1/8 in too small?
Inside of rear of pulley is 3-7/8, my original is 4 in?
Won't fit over the timing cover?
I don't recall any options when I ordered this one?
What did I do wrong?
Where to get the correct one?
Thanks

 

Lot of modern import retro parts are .

I would look for NOS parts, and maybe include the M38A1 which had a two-groove pulley.
Jeep Willys M38 M38A1 NOS Engine Crank Shaft Pulley G-740 G-758 | eBay

 

It came from Morris 4x4. In a crown box.
I was under the impression crown stuff was ok ?
I've requested a refund.
Any other option besides nos or used oem ?
I only need a single grove.
Will they fit where a 2 grove was ?
Thanks

 

In touch with Morris yesterday, I was dreading it,but all went well.
They gave me credit,helped me find a different pulley to try,and told me to keep
The one that don't fit. Best customer service experience I've ever had.
I'm going to try a single grove,only need 1 belt.

 

Welcome from Michigan, yes you do only need one grove pully, unless you have a governor on your motor, according to the people on ECJ5. These guys know everything about Jeeps.

 

Parts came in today, I'll try to install this weekend.

 

Single grove pulley on and working fine.
Had to buy a belt, seems the outer pulley grove diameter was different than the inner, where it was,
1 in shorter belt did the trick. Had to flip the alt to get bracket to line up.
No more wobble!