Milling machine and rotary table. If they don’t know what you are talking about, go somewhere else! Find a proper ‘torque plate’ to finish the job! Drill the holes slightly under size, then use a 1/64” oversized reamer to finish holes, since two flute drills do not drill a round hole.

Ed
Attachments
7C47195E-7B46-4650-8974-BBEE765AD089.jpeg (255.82 KB, 316 downloads)

Last edited by EdPruss; 02/04/2023 12:07 AM.
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.