I replaced mine with the SS. Take a look at the design of the plastic ones as the old ones had too many pieces and were a pain to take off. Can’t imagine putting new ones on with the same # of pieces.
SS was easy as it had a top and bottom only and you screw from the top
I know not exactly what you are looking for, but they offer a straight style too. Walmart (online) has the 90 degree version for $10.00. Last Saturday a friend and I drove around 60 miles looking for any local dealer / marina that had them in stock. No one did.
As he was driving from the fourth place we tried I was googling and came across the ones from Walmart's website. They were offered from a third party seller (T-H Marine). He ordered a pair and delivery was listed as 10-14 days. He received them in three days and they fit perfectly into his 2003 Seafarer 226