'83 Camaros used a mechanical clutch, but you may be able to use the '83 parts with the 84-up housing IF they were smart enough to include an opening on the side of the housing for it? They did this with the Isuzu 4spds that Chevy used in the S10, so maybe they did with the others?? a picture of the other side of the housing would help. I saw an '83 housing on Ebay a few weeks ago that didn't sell. keep looking. Of course, you could always use the stock iron V8 or L6 housing, try to find one with provisions for side mounts if possible, and clearance for the flywheel as has been said.
Check flywheel clearance first, that will make it easy to make up your mind. If your block can take either starter type, then maybe going with the smaller flywheel would be a possibility.
