My choice would be a
https://www.jegs.com/i/Crane-Cams/271/100032/10002/-1
260/260....nice small lope and best of all, will not rob low end power...
Make sure you grab new springs , retainers and keepers...plus a new gear and chain set....
Make sure you use the assembly lube supplied and prelube the engine before first fire up...
You should keep engine at around 1800 rpm for at least ten minutes after first start or you risk ruining cam lobes due to low lubrication issues...also make sure your oil has sufficient ZDDP additive....
More details available at
http://www.enginebuildermag.com/2011...-in-procedure/
I do hope that two barrel is at least a Holley 350 CFM....
Have fun...
