Aries are you willing to just sell the 4u cases?

I can sell you the case:

with no modifications for $150
with modifications for $250 plus shipping
Fans are extra at $20 each x 3 = $60

What are the mods with the $250 case compared to the $150 case?

It looks like this case with the front and back swapped and the drive bay taken out to accommodate GPUs.

https://www.amazon.com/Rosewill-Server-Chassis-Rackmount-Metal/dp/B0091IZ1ZG?th=1&psc=1