there is one that has been recommended that i would not use, will not mention but has been lissted a few times.
i had my machining done there, and i had to get another shop to do a quick job on my crank and they found the crank had 8thou
run out, the crank was full of metal and had not been cleaned, my block had marks in the bores from the hone being dragged out
and 2 welsh plugs missing from the oil gallerys. the big ends on my rods were not true. all up i had to sepnd another $1200 to fix everything
I do highly recommend John Wilson Engineering at southport. hell my rb20 revs to 9k and makes just over 400rwhp. cant complain