I am in need of your wisdom re sbp rims, lbp disk brakes

Folks,

I have a lovely set of rallye rims, rings, acorns and tires for sale at a great price.

A local gent who just bought a duster with sbp on the rear and lbp on the front (discs) would like to buy them. He likes the rallye rim look. I would like to sell them only if they will work.

The acorns for the two patterns are different.

Since spacers work really well for me I suggested that he move the front down to the sbp with a spacer.

He says that he was told that he would have to drill out the rim to make them fit.

I have no desire to get into a discussion about adapters.

What I would like to know if anyone has done this and will it work say, using a 1 inch spacer ? Won;t the spacer mover the rim to the smaller part of the spindle ?

Thanks
Ian.