Had a Thunderbike rack and frame loop,on my bike for 5 years.
Sorry no pics available.
Had frame rail powder coated at time of purchase.
With rack removed,4 bolts,frame rail looks very old school and works a treat.
Can you deal with Thunderbike direct? They are great to deal with.
They will ship os and with the way the US dollar is the rack/rail would be very reasonably priced.