Hi Jim, Just started my 455 to 470 build. Totally stock 455. Regarding the crank grinding, should I trust my local grinder here in Toronto or is it still worth the shipping cost sending it to you? Is there anyone here you know of that is really good with Buick motors? I trust everything you discuss in the threads but shipping these BBB around the USA can get costly. I will need the piston and more advise as I go. I have built motors before but only for street cars. This is different. Strickly drag racing. I saw the mock invoice for a 470 build, but it was missing the block gurdle install cost. $$?? Thanks. Mel.