1985 or 1989 was the first year of the of the 351w being a roller. I have an 1983 block and its a non-roller. But its a great motor to build, definatley try to find a 1989-1993, they should all be roller. The crown jewel is a F150 lightning motor, its a roller and its forged. You should be able to find the 351w in almost all fullsize vans and trucks. Good luck and keep us posted with the build.....