Yes. A manual trim from a '95HX would be the easiest choice, and could be installed
in less than an hour. You could buy the parts new probly about $70.
Come on Bill... A 140mm HX trim will not fit a 155 LTD pump.
The answer is yes...but its a PITA. you will have to give up reverse, Drill a ~1" hole through your hull, buy a VTS setup and nozzles out of a GSXL and do some custom wiring. I dont even know if a hull that big would respond to adjustable trim.