Cars Q&A

hello , I have a honda unicorn 2005 model. It is giving me satisfactory results from last 5 years. Now I want to do some stunts on my unicorn. I already replace the filter with K&N and also replace the Spark Plug with Iridium. The pick up is high but still it is not 100% supportive for wheelie.....So what are the tunning settings or other settings I should do?? And also should I replace the Disc Brake Shoes with any standard ones for Stoppie???