Well. A few more details about what YOU want out of the car and what trans, size rear end you have as well as gear ratio would be a huge help. Tire size is also help.
It has 2.92:1 gears at the back which may or may not go to 3.23:1 if that would make a difference?
The 4 speed is not the early and sought after close ratio boxes but a later more open ratio box that was mated to 318's in Australia. I've been advised that I should keep the 2.92:1 in the diff.
I'm really after a bit of fun. I don't do more than 500 miles a year and don't care about motorway RPMs and just wanna mess around in the roads.