I have a early 90's 27' daytona with twin bravo 1 drives the propshaft & vert. input shaft look oversized but I have nothing to compare to any pics of stock units out there or prints I can take sizes off and mic. mine the boat had low budget blown bigblocks and was turning 4 blade 30 pitch props at 5200 rpm when I bought it and the shafts do not look twisted at all (were I can see with out tear down completly

are they having problems or just looking for info: if it has large propshafts, they will be 1 1/4"