Are 1978 Crew Cab's all removable trans tunnels?

[79K5er]

I recently picked up a 1974 Suburban K20 for cheap, previous owner swapped an 89 Suburban front clip, doors, dash/gauge cluster, steering column and a few other things onto the truck before I got it. He did a piss-poor job splicing in the 89 headlamps and parking lamps, and there's plenty of loose wiring hanging down under the dash, and literally all the wiring/vacuum stuff on the firewall is cut and missing. I eventually planned to do a crew cab swap onto the frame to make a truggy out of it whenever I got the time and money to throw at it and whenever I found a good cab. I have a line on a 1978 C30 for cheap. Straight front end, wiring and vacuum stuff is all there, its all ready to rock. The carpet is there and clean. It's a 2 wheel drive TH400 truck (don't know if the trans is original, don't recall when the first year for the TH400 in squares was, but the trans is a 400). I'm trying to find out if it has a removable trans hump. My Suburban is a 4 speed so it has a removable high hump, the crew cab I can't tell, the guy asked me not to pull the carpet up cuz its in good shape and said I'd have to buy it first. IF it is, it's a screaming deal and I can get my 70's stuff back in there, 70's clip back on it, and have all the correct wiring for it ready to rock and roll, all for cheaper than a replacement harness from Painless. I'd probably keep the cab for later and just get the suburban running for now.

So guys, 1978 2 wheel drive auto crew cabs, do they have the removable hump or no? I'd prefer not to buy a truck and cut the trans tunnel out if I can avoid it, but if I have to the suburban does have the hump I need so, yeah, either way?

Any insight would be much appreciated!