trick flow old streetheat old tfs

hello. anyone know about a set of trick flow old streetheat or know as TFS. I have a stock 302 and would like to know if the valve's would clear or do i have to get piston's knoched . The person i'm buying from says yes, my installer doesnt think so but isn't sure. these heads are about 4 yrs old and are aluminum. 2.02 and 1.60

Thanks al