Just eyeballed up a set of the TTI shorties and headpipes for fit in my car. It looks like the passenger side (US) is very similar to the 340 exhaust manifold. Driver side primaries go down (not up like the 340 exhaust manfolds) and the collector exits maybe 4" further back and lower than the exhaust manifold. I don't see any reason why they wouldn't work with a 4 speed.
The headpipes are made to work with the TTI exhaust. My current system is not, and its not obvious whether the headpipes will be helpful or it will be better to just fab new from the collector. Some decisions will have to wait until actual installation time.l
It will be about a month before we instaill them. I bought them uncoated, and will be sending them out once I get quotes back from potential coaters.