Oops,, yer right. 1980.Is the J35ETCS a 1980 model ?----Pictures help.----Are you sure it is not 5" difference.
Not sure, but prop is the same.Drive shaft splines??
Thank youDriveshaft splines are the ones up top that go into the crankshaft.----You have to look up part numbers or take them apart to see if this will work !!