Garrett GT20 Project

[samass]

What i did was drill one hole roughly in the right are on the plate, then bolt the turbo down to it, and clamp it down really tight so it won't move. Then I used a drill bit that was a tight fit in the holes to make my centre marks for the other holes, removes the turbo and finished drilling the holes. Do one at a time tho, and then bolt two down, clamp and mark, and then drill the final hole, that way, you shouldn't be able to cock it up