i would not recommend the picco.

if your budget is limited for the R40, go with the Mugen MR12. it will cost about 170.00 and is about the most potent engine for under 200.00 Other choices that ate good would be the Mugen MT12, OS .12TR, and Sirio .12TRP.

if im correct, doesnt the R40 come with ah pipe? if not, the THS once piece pipe is a good low cost option. I would recommend the RB Concepts X12 one piece pipe, though.