Hey everyone, I've been lurking for a while now, in fact... ever since I bought my old rusted out 85 GMC K2500 4 speed.

Now that it has been sold, I'm on to a new project.... An 85 GMC Burb Sierra Classic C2500 3/4 ton with a seized 6.2 and a TH-400 auto that I really need to change out for a biefed up 700R4. The seized 6.2 is a J code, and it has some equipment I haven't seen before. A large electronic modual with vacuum hoses comming out of it right where the sorry excuse for a PVC replacement would be (large copper colored diaphram lookin thing), a large silver canister in the intake path (pre-cleaner), and according to the glove box label, California Emissions????? No idea what that entails... I found a good running, low mileage 6.2 C Code out of an 83 Van for sale, and I want to swap that in if I can.

So, I have a few questions out of all this mess.

1. What do I need to swap off this J code onto the C Code to make it work right, cause IIRC the California trucks had a PCM of sorts....

2. What all is entailed in the CA Emissions package?

3. Is this some kind of rare color on this truck, Code 64 Desert Sand Metallic?

Pictures will be up tomorrow...

Thanks in advance!!