Check this web address out ( www.rainbird.com/landscape/products/rotors/5000series.htm ). It won't list any different specs (the specs are all the same) from the standard 5000 series rotor, but you will be able to see what it looks like (so you will know which one to get). If you look in the top r/h corner, it will be the shortest one shown on the right. I feel this will be the better choice for you, unless you would consider trying a rotory nozzle ( www.rainbird.com/landscape/products/rotarynozzles/index.htm ). What radius do you need to achieve (if it is 24' or less, the rotory nozzle will work)?
Josh
Irrigation /Landscape Lighting / Pump and Well Specialist