6 lug disc brake conversion

[HEADTURNINGC10]

I just need to drill the rivets and make new holes right then puts bolts in the places? What about the motor I heard I had to support it and the only reason I'm doing the 85 swap is it already has drop spindles and springs the front end is nearly slammed I don't mind doing work since I have more time than money but I really don't want to get in over my head though... Any chance you could give me done more info on the swap tx firefighter, but I've also looked into the kit but I got this frame with all steering components and lowered right with a 12 bolt rear 4:11 gears for $300 I couldn't let it get away