For an engine that small I would use an Edelbrock SP2P IF you can find one. 500 Carb would be PLENTY. Next choice would be a Torquer. The Performer runners are MUCH to big for a small engine like that. But hey,,, that's just me. Bruce Hevner -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.323 / Virus Database: 267.8.9/42 - Release Date: 7/6/2005