I you need a led which sits on a 14mm base and the driver needs to be 17mm.
What type of led do you want see this
The LED you have is a XRE this is good for throw.
XPG has more flood but can throw as well
XML Has even more flood and and throw more than XPG.
Costs for XRE is between $3 and $5, XPG $5.5 to $8, XML $8 to $12.
Choose your led and then we can choose a driver.
XRE produces 230Lumens
XPG produes 350Lumens
XML Produes 800 Lumens.