Thanks for all the input. You all have good and valid points. I am building a solid street engine, no racing. I was looking at the 1.72 Magnum roller tip rockers from Comp as a street upgrade for about $150. From there, it looks like Harland Sharp makes a good made in USA 1.75 aluminum full roller for $250. Comp cams 1.7 BBC go for more, and they also have a 1.75 in a quantity of 12 but that kit is $450.