Which rockers to use??!!

i have a set of crane roller rockers with harden sahafts that i have listed in the parts for sale. not sure if they are 1.5 or 1.6 i can check. i ran them for a couple years mostly street use with some drag use, if interested PM me. i had them on a 360 with 340x heads with huges hyd. cam they worked fine, even fit in stock 273 hypo valve covers.