272 props??

[grf_1000]

i have a 96 272. when i bought it, she came with a 3 blade inner and a 4 blade outter props. i know this was not done from regal. i would like to know what the stock size and pitch are for this boat. its a volvo penta dual prop with a single 7.4l. grand bay marine ,local regal dealer, dont have a clue to what props are correct. also i did download a manual for a 93. its the closeest thing i have found but no mention of props. thanks for your help