7.3 ltr Diesel Turbo

I have a 2000 Ford F-250 Super Duty with a 7.3 Ltr. Diesel. It is currently in the local dealership for repairs. I am told that the Turbo has to be replaced. I know that Garrett Makes two turbos. The GTP-38 and the GTP-38R. The GTP-38R is a ball bearing turbo with a ported shroud turbo housing to eliminate the 7.3's notorious "surge" problem. I am wondering if the dealerships are still replacing turbos with the original turbo or if they have started installing the ones with the ported shroud housing in recognition of the problem