I use 5mm H&R spacers all around on 1051. I had a hard time finding +35 offset LM's, so I ended up with +40's and used the spacers to keep the same stance as I had before. They are thin enough that the factory hub still protrudes to keep the wheels hubcentric and they also come with extended wheel studs.
That said, I found that H&R fucked up with their measurements on studs. From the Mitsu factory, the OE rear studs are shorter than the fronts by 5mm. H&R based their "extended length" studs off the rear measurement and only have one kit for the whole car, be it 5-lug DSM or 4-lug GVR4. So when you buy their spacer kit, and replace your OE studs with the H&R units, only the rear will be 5mm longer. So far, the front has been okay with stock length studs and a 5mm spacer, but I'm not very comfortable with it. I would swap them out, but the goddamn ABS rings make that a gigantic pain in my ass as the whole assembly needs to be pressed apart to swap them. Eff it, the lugs haven't come loose since spring, so I think I'm okay.