If you go here:
Then select: PARTS CATALOGUE -> 2002 -> SPORT CRUISERS -> 2700SCR
You will see various parts and diagrams. Chapter #7 (Deck Hardware) has a section called "PORT FWD. COCKPIT ENTRY DOOR" which should be on pages # 4 ~ 5 of Ch. 7.
It includes the original part numbers and some diagrams. notice on Pg 4 Ch7 the diagram shows the helm off. I suspect you can remove the door by unscrewing the lower part an lifting the door. I'm not sure if you're going ot be able to install new truck/rollers without removing the helm. It would help to see it in person.