87 V20 transfer case - what will replace?

[crosby]

I have an 87 V20, but it's a body on a 1977(ish) frame. The tranny, transfer case, axles are all from the late 70s. So, my truck has TBI, but no vehicle speed sensor on the transfer case to feed the computer. Anybody know what fits to replace this? What years would interchange, etc.? If I could find a rebuildable transfer case from a V30 or newer K30, that would fit, I'd like to use a 205. I also have to hook up the original (1987) exhaust manifolds so I can connect the oxygen sensor too. Apparently Edelbrock doesn't make the Tubular Exhaust System for an 87 V20 with cats, AIR tubes, and the oxygen sensor. I have a 350 I pulled out of an 87 Jimmy, which seemed to plug right in everywhere else. Thanks very much for your help guys!!