I would wait honestly. Well as for pumps why not just get a drop in Walboro 255lph or the new Aeromotive 340lph?
Yeah the Walbro can be found a lower cost & will work fine, but for the money the new Aeromotive Stealth is a damn good pump & will give plenty of room for big power later builds. The Stealth flows 30% more fuel then the Walbro 255 & more then the Bosch 44. The reason why I didn't include the Bosch is because they are generally used as an in line not in tank pump.
Walbro:
http://www.injectedperformance.com/brand/walbro.html
Aeromotive:
http://www.shopatron.com/products/pr...AER11140/415.0
BTW the Toyota Supra TT OEM pumps & Mazda Cosmo TT OEM pumps can be used as upgrades. Supra = 260lph @ 12v & Cosmo = 250lph @ 12v