[1972CST]

I just went through much pain with aftermarket doors for my Blazer.

I started off ordering both BLAZER doors from AMD out of Georgia (2018), which were TriPlus brand and took about 8 months to get, didn't fit well at all.

My project stalled due to frustration and not knowing what to do next.

Got a recommendation from a local shop that had built several C10's in the past year (2019/ 2020) and they used TRUCK doors from Truck Shop with good success.
I bought one TRUCK door from Truck Shop and test fitted with the hardtop off with success.
I then bought a second TRUCK door from Truck Shop and had good results.
I proceeded to modify the new TRUCK doors to fit the Blazer application.

The TRUCK doors sold by Truck Shop are Counterpart brand if I remember correctly.
The BLAZER doors sold by Truck Shop are TriPlus brand.

I learned this the hard and expensive way, hope this information helps others so they do not end up in the same situation I was in.