My recent Blitz kart purchased

[Randy Dacus]

To weld Mag wheels here's where to get filler rod and some info :

https://www.weldingwarehouseinc.com/prod...um-alloys/

The Welding Warehouse, Inc. is a distributor of filler metals, and welding wire that caters specifically to the aerospace industry. We are one of the few distributors on the west coast that regularly stocks multiple grades and diameters of hard-to-find titanium, nickel, cobalt, silver, and dissimilar alloys.

And where to find Matco 5" rims :  
http://www.matcomfg.com/WHEELHALF5INCHDI...45-44.html

Matco rim pic below....