Clearance by 2mm's? That's close, but if it clears, it clears. I say go for it.
This also reminded me that I should upgrade my lines to stainless steel.
For my BB upgrade, the cost was as follows:
Reman calipers: $163
Re-drill 4 lug: $50
Red Stuff pads: $ 80
Brake fluid: $8
Caliper Paint: $12
The smile on my face after it was completed: priceless.
And like I said before, I still need to get the SS brake lines. Soon enough.