I'm not 100% sure, but I do believe that all Ford V-8's after 86 used roller cams, I suggest checking out a Hayne's repair manual or something for a 93-95 Ford truck/bronco, I have one and it has some usefull information and pictures about the 351 in the specifications sections, I'm actually doing a 351 swap in my Lx, and I researched the same question, I came to the conclusion that if the motor didn't come with roller, I would make it roller, no big deal.