Alignment

I took my 65 Dart to have a wheel alignment. The mechanic told me it was hard for him to do the alignment because the height of the car is not standard. He claims someone raised the height of the car. He did say he did one side and the other side some of the adjustments. The only thing I have done was changed out the rims from the 13" to 14" in front and 15" in the rear. Should I take it to another shop or does tis sound like he knew what he was doing? To me it didn't sound right....

Thanks for reading....