Which is correct 1985 k5 blazer transmission crossmember

[Lorenblazerk5]

Hi, trying to determine best practices for the mounting the transmission x member. I have two photos. One showing direct attachment to frame. The other showing spacer directly to frame. What is the proper way to mount?
1985 Chevy k5 Blazer 4" lift currently using spacer (which is causing a crack in frame)
Thanks!

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[bucket]

The spacers aren't supposed to go between the frame and crossmember, but people often put them there.

 

[nvrenuf]

Spacer between can lead to cracking or a bending in that area if the crossmember ever hits anything.

Also, lowering the crossmember will make the front driveshaft operating angle worse.