Help!!!!!!!

Aight guys i'm about to scoop up a mazda b2200 that the rear was converted to 5lug. The bolt pattern is for the fullsize chevy 5x5 and the front is still a 6lug im looking for the best way to convert the front end to the same bolt pattern. Don't ask why my friend decided to do a big chevy bolt pattern but he did. The rear end in the truck is a frankenstein rearend its a mazda case with gm 3:73 gears, gm 10 bolt axles, crown vic disc brakes. Weirdest setup i've seen but it works. But i've looked into having the front hubs welded up and then redrilled for the bolt pattern but was wanting to see if there was a better way to go about this.