If they are bot hthe large A6 type then no worries, if the smaller radial type then you will need the brackets to suit. Metric bolts aren't a huge issue as long as you know which they are. I found this problem getting a reman compressor unit. The threaded holes in the compressor base were metric, I tried winding the original bolts in but realised before I did any damage! Just replace the bolts with same length where required.
