The best place to find the asics piranha sp2 is at your local athletics store. They should have the best variety, selection, and pricing for these shoes.
Asics Piranha SP 2 shoes can be purchased from Foot Locker online. I have a pair myself and really like the way they fit and the way they wear on my feet.
Asics Piranha SP running shoes are a very good product and have many key features. You can find out their weight on the following website http://www.amazon.com/ASICS-Men's-Piranha-SP-Running/dp/B0029NZDC6
You can buy them at your local sports store or foot locker. You can also find them online at stores like Amazon.com as well as the Asics website outlet.
The Asics Piranha Sp3 is a very inexpensive pair of shoes. I found them on Amazon for less then $50 used. It is a very very very very good deal .
The Asics Piranha SP3 running shoes have received good reviews in general. They have a lightweight sole which is aimed to provide maximum cushioning and comfort together with a breathable upper layer.
The Asics Piranha SP has great reviews for both training at the gym and jogging. These shoes are not inexpensive but they probably are just what you are looking for.
Thereptilarium.co.uk would get you a small piranha
You can go online and buy Asics on their official website and they will ship them to you in Springfield. Also Eastbay has a great selection of Asics and they ship everywhere too.
You can buy Asics Gel Kayano 18 direct from the official Asics website or through other online sports retailers. Other than that, you can buy them from good sports retailers.
You can purchase Asics Gel Nimbus for women at the following sites www.zappos.com/asics or www.amazon.com/ASICS-Womens-GEL-Nimbus.../B0031Y6OHA I hope this helps you in your search.
Aquascape.com
Any pair of Asics shoes can be purchased at Asics website. Asics shoes can also be found and purchased at Sports Authority, Foot Lockers, and Payless.