*bump* I'd like to see those pics also, if you've got them, Del Turbo.

I've seen them at Checker Auto.

 

I don't know how to tell if it's a .63 or .48, without a code. It's a 5 bolt housing, but Precision does offer a .63 with a 5 bolt housing. ATP also offers a 5 bolt option on their GT30's. The threads related to the .48 all seem to be 3076 turbos making around 340 - 350 whp. This is a 3037 that made much higher than 350 whp. It was making 380+whp at only 20 psi. It could be a .48, but it doesn't seem to have hurt performance. That hp was with the MAF and XEDE tuning. I think an AEM EMS with speed density could make more hp.

 

 

You can look on the back inside of the housing located near the bottom. You will see where it was casted into the housing. From looking at it in a glance it looks to be a .48 A/R but you should look to be sure.

 

Yeah that info is huge and dictates the gain or loss of 60WHP potential. I believe it is the .48 as well, especially if it only made 380WHP.