Think I was using 80, maybe 90mm. Worked nicely for me, with compact bars too. You can have the bars if I can find them. They've got white tape though.
I've also got a set of sprint bars on a longer stem you're welcome to. Stem's ugly as, but it does the job
What length stem stem were you using? I'm 168cm tall, but fear I'll feel too stretched out on it..