First things first, thanks to Dale for giving us a new way to make building a little easier
These are the basic tools that are needed to build (hammer, grinders), a drill press makes things a little bit easier 'but is not necessary a hand drill will do.
this is the set I will be using . These are #8 u drives. stanless stell or zinc plated both are fine
the stanless steel has a 80,000 psi rating and the zink steel has a 75,000 psi rating
drill bit I'm using is #27, this drill bit can be had at any hardwware store for about $2or$3 if using a #10 udrive kit you dont need a drill bit
the holes .the holes that are there should be just fine . some peoplle use loctite be is not needed if you perfer us it cant wont hurt
first we start by grinding down the old rivets ad removing the receiver stubs
next grind the old rivets flush with trunion, this counts for the front trunnion as well. the rivet next to the magwell will be riveted
next insert the rear trunion
now drill the holes a little more than 3/8 inch deep
now place the 3/8 odrive in the holes you just drill into the old rivets. If no rivets are present the kit you need will be #10 Udrives
next start hammering in the udrives til they are nice and even with the receiver
insert the front trunnion into the receiver
I use the original receiver stub as a template for the front trunnion
receive all marked and ready for drilling
drill the marks using # 27 drill bit, same goes for the rear trunnion. If there is no rivet there is no need to drill the, # 10 should be just the right sire for the drive
now that are hole are drilled time to put the udrive in place to be hammered ,when your happy with position of the udrives hammer them in
be careful when hammering not to hit the receiver when hammering the udrives
all done now ready for paint
rear trunnion
the trunnion area next the magwell area was riveted
this intire process from start to finish took about 3 hours I if this is your first time using udrives take your time