Don't know if they are the same you want for the Trill, but I just replaced all of mine on an 81 13' Scamp
at Lowes. They are called self closing hinges and are $1.79 per pair. About four or five color options. They also have the cabinet catches with the lil roller and spring assembly for about $.98.
Fit right in the existing holes. I am changing some over to SS 1/2 bolts and nylon lock washers if they have much weight
to the door.