If it's a 25.4 stem some risers will be easy to find and install. 26 or 26.4 stem would be better with some shims and a 25.4 riser bar.
If you like the close to the stem position you should consider flat bars. Risers usually make wheelies easier and offer a more upright ride if you're after either of those.
Last edited by LesterOfPuppets; 02-18-11 at 03:42 AM.
Reason: sleepy cant think.